Recently the old
TiddlyWikiDev on Google Groups was "retired" as a place to discuss ideas/problems in favor of GitHub discussions.
Actually I have found myself using the GitHub method frequently recently. Why? Because it is proving to be highly productive. The discussions tend to be more to the specific issue. The discipline of the GitHub posting method is I think very good for clarity!
I just thought you might be interested in my distinct upvote for the viability of GitHub Discussions on technical matters.
Best wishes
TT