[CLIENT] Game Mode Title Appears As "Clas..." in Play Menu

This bug has been repeatable for me on LoL Mac Client patch 6.1.16_01_14_14_57.

Select Play > PVP (should already be selected) > ARAM > Classic > Twisted Treeline or Summoner's Rift (click whichever one is not currently selected in the Game Map section), then in the description below, it will show:

Clas... Summoner's Rift

or

Clas... Twisted Treeline

This text will remain the same when switching "Game Type" from ranked, normal draft pick, or normal blind pick.

I hope this helps!