If you change the frame of an active object and it's in a group that isn't active at start - it never triggers. (This is not new.) But would it be possible to change that at some stage?
It's easy to work around - you just have to change the frame in a group that is active from the start - but it would be nice to eliminate that extra step.
Also there are several issues with loops... I guess there's no way at this stage to know what's been reported or not?