Text hops around in text box from top to bottom when moving text frame. I have seen a lot people online having the same issue. Only work around, and it's just that a work around not a fix, every time you place text you have to go to Object>Text Frame Options>Baseline Option and click "Use Custom Baseline Grid". Doing this every single time I place text is getting rather tedious. Just encountered bug today, restarted both indesign and imac, the bug stayed. About to re-install indesign all together.