When typing into a textarea, I will randomly see text appear and disappear as I'm typing. It even seems to grab text from earlier in the textarea and briefly move it to the current cursor, then jump back to where it was as I keep typing.
If I ignore it and keep typing, my text ends up okay, but it's very annoying
I've also attached a video. It is not site-specific, but it does seem to get more pronounced the more text I have typed. It's done this to me in Github, gitlab, and dozens of other sites. The only extension I have installed is 1Password. (fun fact, it's doing it to me right now as I'm typing this bug report out).
I just updated Orion RC this morning, but it has been doing this prior to that as well. It's not new to the new version.
I expect that as I'm typing in a textarea, the input remains stable.
ersion 0.99.127.3.2-rc (WebKit 619.1.11.111.2)
Sonoma (14)