In the past month or so, sometimes when I edit a question or answer I get the same editor I've been seeing for years, other times I see a different one which is, well, uglier and more cumbersome and I'd rather never see. So far I haven't figured out a pattern for when I see one vs the other.
For example, at How to batch convert ODT files to PDF with a LibreOffice AppImage in Linux if I click the "Edit" button under the question I get put into an editor that looks like this (the one I like):
while if I click the "Edit" button under the answer I get put into an editor that looks like this (the one I dislike);
Note the difference in the buttons on the menu line of each one.
Why are there 2 different editors and how can I avoid getting put into that second one?

