Default on pa 4.5 beta 2 since last week... some info required pls

hi guys!

im currently on pa 4.5 beta 2 on my nexus 5... been almost a week now...loving it!.. however my game "ruzzle" always crashes on startup (like 9.5 times out of 10...yes that frequently) and sometimes recents menu is blank...but when i touch the screen it shows me all my running apps..any work around for this? or is this happening coz im on beta version?

EDIT : i might have solved the recents problem by reseting preferences.. but time will tell

also 1 request pls... can u by any chance add the hover notification feature to show up on the lock screen aswell? am currently using xblast for this purpose but the entire ui of pa's hover notification is just classs!! ( when you have pattern lock you are not able to pull down notifications unless you unlock.. So with hover I can see in detail my notifications and choose whether I want to unlock to reply/view or not.