Strange new oddity just now -- went to prepare new spells for my cleric, and sometimes while expanding or collapsing spells in the known spells section of the sidebar (not the prepared spells section) when I attempted to expand or collapse a spell, the whole sidebar would close. Sometimes while expanding a spell, sometimes when collapsing. Sometimes the first spell I tried, sometimes the third. No pattern to when that I could tell, but the whole sidebar would go away instead of the expected behavior. I just tried it on another character, a warlock, and the same thing happened. Expand or collapse a few spells in the sidebar, and the sidebar collapses.