Thanks very much for your time in responding Steven.
It seems for some reason I'm incapable of finding a solution to the problems
I have that can actually be solved in construct, without posting a topic
on the forums 5 minutes before hand and embarrassing myself =_=;;;
It ended up being a needlessly silly wrong event setup, because of some
overlooked confusion.
I had the resume/play actions under the 'is jumping' event, and I only
just now discovered/realized/found the problem. I remembered somewhere
somehow finding out about how even though the events are written as
'resume current animation' and 'play current animation', if an animation
is already playing, it will cause that to pause.
And so because there wasn't a 'trigger once' condition, it was looping
the resume/pause of the animation and never made any progress until
it was falling.
Fixing it with a 'trigger once' has got it working cleanly now.