https://bugs.winehq.org/show_bug.cgi?id=47198
--- Comment #83 from mail+wine@m-reimer.de --- This bug is about the 9.10 issue only which has received working patches by Andrew Wesie which have been added to the most common solutions to play LoL on Linux.
I've created a new bug report for the current issue which came with the 9.20 update: https://bugs.winehq.org/show_bug.cgi?id=47915