The lights effects share a common system with the smoke effect...and FS-recorder isn't running the additional scripts needed to make that work properly. This can be fixed on my end for sure
The flaps on the other hand are not unique in any way...they are default FSX.
So I have to believe, on first impression, this is likely a quirk in FS-recorder.
Like maybe there’s been some event recorded that interferes with flaps.
I'd have to experiment with it to find the patterns...
Also we should find other people that use FS-recorder to get some more insight.
As I recall there was a post here already about FS-recorder...
But, I will look at the flaps code to see if there's anything unusual there.