I had a memory list open and was trying to change the version displayed, from NASB95 to "NASB95, ESV, HCSB", but logos (or the passage list tab) wasn't responding.
Also, maybe or maybe not related - I've noticed there are times with the sync icon at the upper right menu area is always turning and won't stop. There are no other indicators when I notice this - no message like "downloading updates" or anything like that - just the revolving sync icon.