If I understand well, the Wrap Text option in the Note window has for purpose to force break lines if a line is too long.
But it doesn't seem to work.
I tested with both Reaper 4.76 SWS 2.6.0 #0 and Reaper 5 pre7 SWS 2.6.2 without success.
Did I make something wrong ?
Not sure you gif has anything to do with this report...
I can confirm the wrap text option isn't working too well though, sometimes you might need to close/reopen the Notes window for this option to work. Will look at that...
Indeed, that was a poor copy pasting. My bad.
Thanks for your work on this :)
fixed for the next pre-release (e7297be)