Upgraded from 3.10 to 3.11.1. 64-bit. Linux Mint 18.2
When entering something in the search field and pressing enter, it takes much longer than before. (Before maybe 1-2 seconds, now 3-6+.)
Also, before when clicking the clear search field icon, it also implied resetting the view, not I need to also press enter explicity. I prefered the earlier behavior.
(As always, thanks so much for making Calibre available to all of us!
)