I’ve been getting it in a completely different context, and wrong.
Always on mobile, I’ve reproduced it with both Brave and Duckduckgo on Android, and had a user tell me they’ve seen it with Android Chrome. It’s not 100% reproducible, but probably 50 to 80%.
Start a reply.
Switch to a different app (typically Firefox Focus, but not always) select some text to copy from there.
Return to the Discourse app.
Bam. “Draft is being edited…”
There is no other window. Hitting page reload fixes it. Ignoring it can result in double posts (both apparently complete). I’ve been seeing it for a while. Yesterday I had a double post, because the “Draft” message came up only as I was finishing. Running 2.6.0.beta1 Discourse.
I know you only support Chrome on Android, and I avoid that browser for more privacy enforcing ones. But DDG and Brave are, I believe, basically wrapped Chrome. I never had this issue when I was using Firefox on Android for Discourse, but there were plenty of other issues, mostly cosmetic.