[1.0.3-rc3] Shape predictor isn't long enough or bug

[bronze wing]

Train track on bottom right of image is long

[gilded cypress]

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1. [SPZ2-5198] — 👀 55% similar

The new predictions end just before belt readers and no longer continue afterwards
Done • Priority: High • Fix: 1.0 Bugfixes before Feature Freeze • Resolution: Fix Verified

Shape Previews end just before Belt Readers and do not continue afterwards on the Conveyor Belt. The issue occurs when a Conveyor Belt contacts a Belt Reader, causing the Shape Previews to stop displaying. The same problem affects Belt Filters and Pipe Gates. This prevents players from seeing predicted shape flow through these monitoring structures. Shape Previews should continue displaying past Belt Readers to show the expected item flow.
💬 Threads: [1.0.0-A2-RC1] Belt Reader Blocks the Pr

2. [SPZ2-3208] — 👀 45% similar

Train predictions are lost after twister / loops
Done • Priority: Medium • Fix: 4 - Early Access • Resolution: Done

Train predictions are lost after passing through a Rail Twister or Rail Loop in the Supporter Edition. The visual green prediction line that shows the train's path does not continue beyond these special rail pieces. This issue affects both the Rail Twister and Rail Loop structures. The bug is not just visual - it also causes trains to potentially return by the wrong path after passing through these elements, affecting train routing behavior.

3. [SPZ2-5385] — 👀 40% similar

New predictions show before a belt filter but not after
Done • Priority: High • Fix: None • Resolution: Duplicate

Shape Previews stop displaying after passing through a Belt Filter, even though they show correctly before reaching it. This occurs in Classic Mode when placing a Belt Filter on a conveyor line - the preview system appears to be blocked by the filter structure. The expected behavior is that Shape Previews should continue to display after Belt Filters, showing the predicted shapes based on the filter's configured Signal input. This makes it difficult to visualize what items will pass through t...

4. [SPZ2-5196] — 👀 35% similar

The new predictions aren't showing for a belt catcher that isn't connected to anything in the direction they are going
Done • Priority: High • Fix: 1.0 Bugfixes before Feature Freeze • Resolution: Fix Verified

Shape Previews are not displaying for Belt Catchers that are not connected to anything in the direction they are going. This occurs in Classic Mode when placing a Belt Catcher without a connected output path. The expected behavior is that Shape Previews should show what items the Belt Catcher will output, even when not connected to downstream structures. The issue was identified and has been fixed, with the fix verified on the master build.

5. [SPZ2-5308] — 👀 30% similar

Unloader without a train stop does not forward predictions
Done • Priority: High • Fix: 1.0 Bugfixes before Feature Freeze • Resolution: Done

Shape Wagon Unloader does not forward Shape Previews when placed without a Train Stop. When a Train Stop is present, the previews work correctly, but omitting it causes the prediction forwarding to fail. This affects the ability to see what shapes will be output from the unloader in advance. The issue has been fixed as of December 9, 2025 in build [token redacted].

6. [SPZ2-4648] — 👀 28% similar

No shape preview on shapes coming out from train unloader directly on space belt
Done • Priority: Critical • Fix: 1.0 Release [1.0.0] • Resolution: Done

Shape Previews are not displayed on shapes exiting a Shape Wagon Unloader directly onto a Space Belt. If the shapes instead go from the unloader onto a Space Platform with Conveyor Belts, previews appear correctly. The issue can be reproduced by connecting a Shape Wagon Unloader to any Space Platform via a Space Belt and observing the missing previews on the belts. This affects usability since many players lose shape preview visibility once they start using trains. The issue has been marked a...
💬 Threads: [0.1.0-pre6-rc1] Shape Unloader show no

Found 6 similar reports • Searched 3,520 reports • Use /check-duplicates to recheck

[bronze wing]

i think it is bug because now they are showing up on the left most ones

[inner sleet]

Can you give me a save file of when it is happening?

[bronze wing]

unlikely. I'll try to find the earliest save it still has when I have time. These buildings are still in the save, so it should be fine

[gilded cypress]

✅ Thank you for providing further information, our team will have a look again!

[inner sleet]

ok thanks 🙂

[bronze wing]

I think this is the save file of up to two hours after posting the report, according to the file time and date. (I haven't checked directly)

[gilded cypress]

✅ Thank you for providing further information, our team will have a look again!

[gilded cypress]

💾 Must Consume

Started in

1.0.3-rc3

Last played in

1.0.3-rc3

Scenario

Manufacture Mode - Regular

Seed

83937

Research

30%

Buildings

133,516

Completed

No

[1.0.3-rc3] Shape predictor isn't long enough or bug

[inner sleet]

What if you change Shape Previews Speed down the bottom left to fastest?:

[bronze wing]

I don't know, it was on medium. I'll let you know if I find any similar issues?

[gilded cypress]

✅ Thank you for providing further information, our team will have a look again!

[inner sleet]

The issue that you are having is that they are taking too long to display?
They do eventually show up?

[bronze wing]

they did show up later, so based on my lack of information and what you're saying it could be

[inner sleet]

Low fps will cause them to take longer to display.

[bronze wing]

is 60 considered low?

[inner sleet]

No

[bronze wing]

then low fps isn't it

[inner sleet]

What are your system specifications?

[bronze wing]

good question! but the game runs at 60 fps because that's my monitor's cap, and Vsync sets it to the cap. If I turn off Vsync it goes to 140 to 150 fps

or do you want the things that show up in the top right of the settings menu?

[inner sleet]

That should be enough information yes 🙂

[bronze wing]

may I dm them for privacy?

[inner sleet]

Sure.

[inner sleet]

I feel like we are missing something of this issue. I do experience something similar but it resolves itself pretty quickly, and the save has to be larger than what you gave me for it to happen. Your system specs seem ok.

[bronze wing]

how long is pretty quickly

[gilded cypress]

✅ Thank you for providing further information, our team will have a look again!

[inner sleet]

5 seconds? That was for a save that had 1mill structural units though.

[bronze wing]

I don't think they came back on my end within 5 seconds

[gilded cypress]

✅ Thank you for providing further information, our team will have a look again!