Dominion I agree. NodeBB has a similar icon once something is edited, the only difference is that there is a clear distinction on where to find the edit tool, etc., and the "three dots" are always visible. I would propose that for Flarum, making the Report, Edit, etc. "three dots" always visible.
While on the UI topic, I think there is too much blank space at the bottom of each comment. It could use some trimming.