My initial testing was on Windows. Just texted on a mac and I get the same results. Still seems jumpy at the end on the newer XF versions compared to the old install I'm comparing it against.
Exactly, but it happens regardless of if there's any additional fields.
It's totally smooth on the older install though, which leads me to think it's a regression.
I only really noticed it because I'm building a new site and it only has one node organised by prefixes for a feed type view, and it jumps every time you go to start a new thread, which isn't ideal.
As best we can figure, this seems related to changes in Froala 3 which was new in XF 2.2. There were changes to editor initialization in this version which make it difficult for us to change. Theoretically there may be workarounds but they have trade offs which may end up being worse.