Missing RT icons

The system is still letting us use bold and other formats, but the icons are missing.

I see the icons. Try some Shift-Refreshes, maybe?

Nothing was changed to these icons; a force refresh as Qralloq mentioned should fix it.

Yes... flushed the cache and rebooted and they are back (stupid css ISSUES, ME THINKS)

I've never been good at dealing with cache; I'm trying to figure out the best way to force new downloads when I update code (same issue you're likely having with PMs).