I'm getting something very weird- During a scene my dialogue action cuts off after only about a second. Where it cuts off exactly is inconsistent. I've checked the file, it's fine, I even deleted the action and info altogether and recreated them, still have the problem.

The odd thing is that I hadn't touched the scene in a long time, the issue just popped up. I've checked the action, scene, quest, and phase settings and can't figure out why it's cutting off the actor's line. I even tried adding a phase condition "IsSceneActionDone" with a timer that was the same length as the dialogue line. The line cut off then the scene got stuck. I removed the timer and condition, and the scene now progresses again, but the line still cuts off.

Does anyone have any idea what the heck could be going on here?

got actors in an optional alias but non-optional in scene actors?

No. The scene itself works fine. Everyone is there and everything. Just the 'Scene Action' for the dialogue cuts off after only about 1-2 seconds, instead of playing the whole 9+ second dialogue line.