In the first chapter of the expansion, the 'Explosive Canisters' are not making their way to the guns, but rather just randomly teleporting around. This is my second play-through, and I didn't encounter this issue the first time. player.log
So there's not much immediately obvious here. But one thing I think could be happening is that Ultra applies a buff which allows patients to teleport that she treats. Do you have Ultra in the hospital, is it possible she has treated this canister? It's a bit difficult to tell from the camera angle but if this is the case there's usually a small drone attached to the character.
In any case the teleportation should only allow them to go where they're meant to go, and this canister does appear to be lost. If you still have this save is the canister trying to make its way somewhere what is its current goal/task?
A save file for this would be greatly appreciated. Ideally a full debug output as detailed here: https://support.brightrockgames.com/knowledge-bases/21/articles/8440-reporting-a-bug-or-crash-galacticare
Edit to add short video clip - look at the bottom-left of the screen for the canister marked as Priority.Recording 2025-05-25 155956.mp4