For a few weeks now the flag icons on comments don't have an indication when hovering over them. On SO I am rather sure that it was a change in color to red.
Another user suggested that this might be connected to changes in the comment flags to allow them to be retracted again:
Did you also remove the flag hover effect on purpose, or is that a bug? (guessing that's related to this, as the problem appeared after this was pushed) – Zoe Aug 15 at 11:42
Posting this to have it as actual post that can be addressed better than a comment could :)