Another update.
We actually found a way to do it. It should be working now.
All members who have unexpired warnings or infractions should be able to see a "Warnings" tab on their profile page.
Just to update everyone, this issue has indeed not been solved. Mods and admins can see a Warning tab on every member's profile who has received warnings and infractions, but regular members cannot see their own tab. By enabling this feature it would allow every member to see every other...