Actually it is reasonable. As long as a update hasn't been released It is expected that until and hour before its ready to upload a new update that all efforts should be made to Fix defects reported.
With Preview its different than a Final Release.
As long its in Beta it’s a work in Progress. And if developers are requesting suggestions. Then they should be be fixing items up until an hour before upload time.
FeedBack request on a Final version basically reports are bugs that haven't been fixed. There fore need more time to fix as they are items that are not so easy to fix.
And this herky - Jerky scroll issue should have been one of the very first bugs they should have fixed. I Know I sent a Frown Report. It very annoying, disconcerting and and time waster, to have to wait for it to settle down before you can continue doing
your work. I know with me it takes 5 seconds or so to settle down I shouldn't have to wait that long. and once I release it should quit dancing around. The same issue I haven't found in Word or PowerPoint. I don't use Outlook. I find SeaMonkey a better format.
_________
Disclaimer:
The opinions / replies / answers given here, are solely mine, and mine alone. It does not necessarily reflect upon my position as a Community Moderator. Nor, does it reflect any possible position held by Microsoft or their employees.