[RESOLVED] UI gets constantly reloaded (every few seconds) | Home Assistant | Page 1

quartz hazel Oct 17, 2025, 10:12 AM

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Hi all,

A problem has recently started and i can't find the cause.

The UI constnatly gets reloaded. it happens every few seconds. Apart from slight blinking on dashboards it is particular annoying in things like node-red or Zigbee2MQTT which are now unusable.

The problem happens in all browsers, including mobile.

The HA instance has been mostly untouched for last 6 months, i have recently upgraded to newer version, but I do not know if that's what's causing it.
I have disabled ALL custom cards to test - no luck.
Logs don't give me any indication as to what it could be.

There is a console log: "Uncaught (in promise): message "Subscription not found"
However I can't figure out which subscription is missing of even if this is the cause of reloads or a symptom of them.

I would be very grateful for any advice or help on how to troubleshoot this problem.

frail mauve Oct 17, 2025, 10:43 AM

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already performed reboot?

quartz hazel Oct 17, 2025, 10:43 AM

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yes, it's a docker based installed on a minipc. Rebooted, restarted, everything

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i've just enabled system wide debug logging and digging through that, disabling integrations one at a time

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so far no luck

frail mauve Oct 17, 2025, 10:45 AM

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best thing to do indeed, take your time when checking.

quartz hazel Oct 17, 2025, 10:46 AM

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is there anything i can do to find which subscription it's not happy about?

frail mauve Oct 17, 2025, 10:52 AM

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would check integrations that need subs.

quartz hazel Oct 17, 2025, 10:55 AM

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oh, not all of them do? how can i try to find out which integration it could be?

frail mauve Oct 17, 2025, 1:15 PM

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would start with integrations that heve a web/globe symbol.

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runic glacier Oct 17, 2025, 1:24 PM

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Try Safe Mode?

quartz hazel Oct 20, 2025, 12:00 PM

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i wiped the config directory (backed it up) to reset HA fully. it's still happening, i really don't understand how

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it's essentially a fresh install

runic glacier Oct 20, 2025, 12:14 PM

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What does 'reloading' mean exactly? A screen recording may be useful to explain what you mean.

quartz hazel Oct 20, 2025, 12:36 PM

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essentially the right pane refreshes itself. i do not get the full loading widget like ctrl-r does, but the part of dashboard gets reloaded.

it's annoying both because there is a visible twitch when reload happens, but worst part is that it closes all pop up menus. it is impossible to edit the dashboard because of it (you have 1-2 seconds to make the change, or the menu is gone)

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sub pages like nodered are completely unusable as it takes about 2 seconds to fully load it's UI, and it reloads shortly after

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the tricky part is that i can't seem to find what the missing subscription is

runic glacier Oct 20, 2025, 12:44 PM

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find what the missing subscription is
I'm not sure that's really related.

quartz hazel Oct 20, 2025, 12:45 PM

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that is fair. it is entirely possible it's 2 different problems and the missing subscription error is a symptom of reload, not the cause of it

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but it's the only lead i have 🙁

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what i've done so far:

completely reset hass-config directlry and set up HA fresh
tried HA core 2025.9.4, 2025.10.1, 2025.10.3
shut down nodered, esphome and frigate containers
tried different browsers

the reloads persist

runic glacier Oct 20, 2025, 12:58 PM

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Hmm not really sure, never heard of anything like that.
Just for my curiousity, can you restart HA in safe mode, and take a short screen recording of the issue in safe mode?

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just like the full browser window

quartz hazel Oct 20, 2025, 12:58 PM

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let me try that, i didnt' even know safemode existed

runic glacier Oct 20, 2025, 12:59 PM

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It's in the reboot dialog, advanced options

quartz hazel Oct 20, 2025, 1:01 PM

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yup, still happening in safe mode

runic glacier Oct 20, 2025, 1:03 PM

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So I guess it's not just the right pane, looks like it's the whole window

quartz hazel Oct 20, 2025, 1:03 PM

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though in safe mode it seems to do full page reload, not just the dashboard pane

runic glacier Oct 20, 2025, 1:03 PM

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oh that's different?

quartz hazel Oct 20, 2025, 1:03 PM

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it appears to be slightly different behaviour yes - reload is still there. but in safe mode it does full page reload.

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let me go back to normal and check

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yeah, it's limited 'light' reload in normal mode, full page reload in safe

runic glacier Oct 20, 2025, 1:06 PM

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Does anything else get printed in the browser console, besides the subscription thing

quartz hazel Oct 20, 2025, 1:06 PM

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sadly no

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i can see this message in debug logs of HA. but only extra bit of info it gives me is message ID

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tracing that back to subscribe event yielded no usable results

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oh, new data point!

going directly to <localip>:8123/ **does not ** seem to have this problem.

loading UI via nginx proxy does

runic glacier Oct 20, 2025, 1:09 PM

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I feel like I see that sometimes too, it's probably just a side effect of reloading the page.

quartz hazel Oct 20, 2025, 1:09 PM

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looks like thats where the issue is - and it kinda makes sense as the problem survived full HA wipe and reset

runic glacier Oct 20, 2025, 1:10 PM

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The only real thing I was thinking was it seems maybe related to the websocket losing connection to the server, but I couldn't think of a good way to prove that.

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If it's some advanced networking thing on your network probably can't help there 😅

quartz hazel Oct 20, 2025, 1:11 PM

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i'd expect to see some errors on that front. but i do see new websocket connections being made

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it's just standard docker contaiuner with nginx proxy

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but it seems i have a new lead to dig thgough now

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@runic glacier by the way, thank you very much for going through this with me!

runic glacier Oct 20, 2025, 1:12 PM

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There's also a debug toggle hidden in the upper right of developer tools. I don't know if it will be helpful.

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It's more of like for debugging service calls and such, but it will probably cause more log spew

quartz hazel Oct 20, 2025, 1:13 PM

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runic glacier There's also a debug toggle hidden in the upper right of developer tools. I don'...

oh cool, didn't know about that also. let me try it

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this is nice! it's same stuff that is burried deep in the logs and was a rather annoying to piece together.

Thanks!

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runic glacier Oct 20, 2025, 1:16 PM

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That get_config is probably from this:

    protected hassReconnected() {
      super.hassReconnected();

      this._updateHass({ connected: true });
      broadcastConnectionStatus("connected");

      // on reconnect always fetch config as we might miss an update while we were disconnected
      // @ts-ignore
      this.hass!.callWS({ type: "get_config" }).then((config: HassConfig) => {
        if (config.safe_mode) {
          // @ts-ignore Firefox supports forceGet
          location.reload(true);
        }
        this._updateHass({ config });
        this.checkDataBaseMigration();
      });
    }

quartz hazel Oct 20, 2025, 1:16 PM

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i think your websocket connection theory is the most likely culprit atm

runic glacier Oct 20, 2025, 1:16 PM

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That explains why safe mode reloads more

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so yeah it ~~definitely~~ probably thinks it has lost and regained server connection

quartz hazel Oct 20, 2025, 1:19 PM

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the websocket ocnnection shows this on every connection attempt

runic glacier Oct 20, 2025, 1:20 PM

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🤷

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You can try run this in your console:

document.getElementsByTagName("home-assistant")[0].hass.connection.addEventListener("disconnected", () => { console.log("HASS Disconnected!") })

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Won't tell you why though.

quartz hazel Oct 20, 2025, 1:23 PM

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yup, it disconnects

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to confirm, it is the websocket connection that is causing this? nothing else can?

runic glacier Oct 20, 2025, 1:23 PM

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I don't know

quartz hazel Oct 20, 2025, 1:24 PM

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well, this is massive progress. went from being completely blind to having a culprit.

Everything appears to work fine without nginx in front of HA.

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can't yet see what's wrong with nginx, the config is super standard, up to date, with no funny business.

it also hasn't been touched in 8 months

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but i'll keep digging

runic glacier Oct 20, 2025, 1:27 PM

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Could try logout and log back in if you haven't in a while.

quartz hazel Oct 20, 2025, 1:27 PM

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i did, multiple times. also wiped browser cache completely, tried incognito mode, different browsers

runic glacier Oct 20, 2025, 1:28 PM

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I'll step out now but best of luck, sounds frustrating 😅

quartz hazel Oct 20, 2025, 1:31 PM

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thank you for your time and help!

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@runic glacier got it! i think...

added an explicit location block for /api/websocket to nginx config that sets the upgrade header to "websocket" instead of "$http_upgrade"

it fixes the reloads and websocket reconnects. and commenting out this block brings the problem back reliably.

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still don't know..... what it didn't like in the original config but hey, this works!

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[RESOLVED] UI gets constantly reloaded (every few seconds)

quartz hazel Oct 20, 2025, 2:14 PM

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@runic glacier sloowly bringing HA back online. restoring from backup wasn't as painless as i hoped. I really need to fix that up.

but so far everything that does work works well

frail mauve Oct 20, 2025, 2:20 PM

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then you can mark your thread as resolved 😉

quartz hazel Oct 20, 2025, 2:23 PM

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frail mauve then you can mark your thread as resolved 😉

how can i do that? i updated the title as i coudnt' find another way

frail mauve Oct 20, 2025, 2:24 PM

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where you set UI/UX when you made the thread, checkbox resolved.

quartz hazel Oct 20, 2025, 2:24 PM

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aah, it's in tags?

#[RESOLVED] UI gets constantly reloaded (every few seconds)