The icon shown above is the fa-circle-o one used everywhere else for “regular” notification level, and it gets greyed-out. It should be (blue) fa-circle:
Seems impossible to fix this by any means other than asking for it to be corrected in the code, hence the bug report…
A bug report means something is broken, preventing normal/typical use of Discourse.
While an incorrect icon can certainly be confusing, it doesn’t prevent normal use of Discourse. We still want to fix #ux issues (as we did here), but we try to keep the #bug category to things that truly break something.