Twisted Arbalest mod failing to activate

[sick falcon]

I'm a little surprised nobody else has posted this bug, because it has been in the game since launch...

Platform: Xbox

What:
On rare, but reliable occasion (I'd say maybe 2-3 times in a given map run, at least), activating the mod for Twisted Arbalest makes the sound, plays the animation, but does nothing in terms of combat actions. Video clip attached to demonstrate - occurs toward the end.

Reproducible:

• Vaguely? It happens to me pretty regularly while playing this character, which is built around quick mod generation so the TwArb mod can be fired quite often.
• I use the Slayer +10 Mutator, but haven't really tested others, so can't say if it is or isn't exclusive to Slayer.
• This occurs on various archetype combinations (I typically use Archon prime or Summoner secondary, and leveled up all other archetypes as the alternative with this weapon setup).

||As a side note, could the TwArb tooltip perhaps be updated to state that the mod causes an Explosion? I absolutely love my Explosion build, but tracking which guns/effects deal Explosions or not is a bit.. inconsistent. 😅||

[radiant herald]

Mods tend to fail to cast in co-op.

Can you reproduce this in single player?

[sick falcon]

Got busy with something tonight, but I'll try to get a clip tomorrow when I can play solo for a bit.

And, I'm not sure if it's worth mentioning, but honestly I play a ton of co-op and haven't noticed mod activation failures at any noticeable rate with other weapons. So if there is a known issue with that in co-op, I can at least say it happens so much more often with TwArb so as to make the other occurrences unnoticed.

[sick falcon]

Did a lot more testing this morning, and got some interesting results.

I ran through the first half of Awakened King (started Anguish steps), then rolled a fresh campaign. Did a full world run of Yaesha, Labyrinth, and got about halfway through N'erud without the bug occurring a single time. So I was starting to think it was indeed exclusive to co-op...

Until...

Bit tight on timing, but you can pretty clearly see the TwArb get lifted to her shoulder (the mod activating animation), and nothing happens at first; had to hit it a second time to fire it off.

So from what I'm seeing, it looks like the bug exists in solo & co-op, but occurs tremendously more in co-op. And as mentioned earlier, I honestly haven't even seen this be a pattern with other weapons (not even the handgun I use for the same build & fire the mod on very regularly), so I'm led to believe that if it is the same core bug, it affects the Twisted Arbalest far more often than any other weapon that I've personally tried, at least.

@radiant herald ^ Updated findings, if you're curious.

[radiant herald]

Intriguing.

No noticable framedrops or anything that could explain it in 1p here.

[sick falcon]

Playing on a Series X, if that's at all helpful.