My border is a bit weird

I got diamond last season, where i got my diamond border as i should, but it it stood that my last highest rank was diamond 1 which was a bug that got fixed but now i got my flex border in normal games and that and now my highest rank is gold 3 which is my lfex rank and im stuck with that border now, i was wondering if anybody else got this bug, if its pretty much me only or if it happend to more then just me