This is why I am happy waiting 6-9 months before updating my bb10 OS. With such a small remaining user base, I just don't want to be the Guinea pig for these incremental updates. My impression is that there is little more than a skeleton crew working on BB10 at BlackBerry, and I'm just not confident in their ability to exhaustively test and quickly fix new versions of the OS.
Considering the very minor improvements in 10.3.3, I am happy to wait a few more months until all the dust has settled.