Hi, I am Lumia 640 XL User , updated on latest Technical Preview built 10586.36 , So far Working fine No major change observed, for your problems
Gestures and touch still does not download from the store. 2) Extra/call and sms filter does not work- it says there are something wrong and asks to restart the phone
Solution: Move All your system Apps like ( Touch, Call Blocker, Display, Extra & Info,Lumia motion data etc into you phone storage) and then go to Store and check for update all apps will eventually be updated without any error. I've Tried this Method and it worked for me