Currently when deleting a comment, the comment remains visible but 'deleted' in tracked changes.
I think that deleting comments, even with track changes enabled, should fully delete the comment. Or, at least, this should be an option within settings.
Use case, which I believe applies for many others:
I use Writer as an editor, so regularly send edits back to contributors, with changes tracked.
That means I also often want to leave comments for contributors, as well as for myself, but normally want to clean these up before sending them back. However currently it is necessary to turn off track changes, delete the comment, then re-enable, in order to ensure the comment is not visible to my contributor.
Many thanks for all the hard work on LibreOffice!
"deleting comments, even with track changes enabled, should fully delete the comment" is WontFix because it's contrary to Track Changes. Similar option doesn't exist AFAIK, so I wouldn't go that way.
But what you ask could be achieved otherwise.
Comment knows when it's deleted, there's no "Delete" on it's menu.
So we could instead (just on tracked deleted comments) add menu item "Remove All Deleted Comments".
Since this command just replaces 3 clicks with turning on/off Track Changes, I'll set to Low Enhancement.