I encountered bug: when you play campaign there are comic-style interludes (animated pictures) with text that transition. The problem is there’s no sound effect when transition occurs. I changed language to f.e. russian and sound works fine but on english there’s no sound. I don’t know when they broke it but before it worked fine, I found 5 year old videos on youtube and there’s sound on transitions.
Example video from 2017:
You can hear transition sounds (+ some SFX) at start. Now open SC and go to any mission with comic interludes - you will hear nothing ;(