I've had 10 now for a couple of days and observed only a few bugs which are solely related to the task switcher screen.
1: When clicking the app switcher button, if you scroll the apps and tap on one when it's in the middle, there is a notable delay before it comes into the foreground. This delay could be 3 seconds or 2, doesn't seem to be s set delay period, just that it's not instant which it is every other time.
2: If you do the above but instead of tapping to bring the app to foreground, swipe it down which also works. Sometimes when doing this the app will get stuck mid move to FG and the app's icon is stuck top centre of the screen. You have to swipe it down again so it pins to the screen correctly.
Both of these are random.