Look in your spTopicView.php templates in the .templates folder of your SP theme. Locate the call to the function sp_PostIndexUserRank() which probably looks like this:

sp_PostIndexUserRank('tagClass=spPostUserRank spCenter');

The default says that if there is a special rank badge then do not show the normal user rank badge as well. But this can be changed with an additiopnal argumer . So – if your call looks like the above change iot to look like this:

sp_PostIndexUserRank('tagClass=spPostUserRank spCenter&showBadge=1&hideIfSpecialRank=0');

which should solve it.

As always, if you have not already done so, we recommend that you create your own SP child theme or custom theme so that any customisation is not lost during a future update.