Ok, and here’s a fun bug I haven’t seen prior to 23.08.3 … I didn’t notice it when I first created this part of the project with 23.08.1, but I can’t say offhand whether it didn’t happen there or I just didn’t notice.
I have a 29.97fps (4k if it matters but it probably doesn’t) clip that I’ve cut to 5:04,17 duration and then tried to apply some gentle time remapping to. The bug I noticed after rendering is that it appears to stall on some frames in the initial part of the clip where the speed should still be 100%, as if it’s slowed it by a small percentage.
At first I thought there must have been some corruption in the project, but it appears to be entirely reproducible, if I just take that clip, enable time remapping, then add a single keyframe at 0:24,00. Even if I don’t change the speed of any part of the clip, some frames prior to that keyframe get duplicated during playback as if it had been slowed.
Presumably there’s some rounding or off-by-one type error happening somewhere, because if I just move that keyframe to 0:23,25, then the bug goes away and the remapping works as expected.