https://forums.opera.com/topic/53491/solved-duplicated-icons-with-negative-filter
[Solved][Duplicated]Icons with negative filter | Opera forums
Jan 4, 2022 - Yo, I am having an issue with icons. most are fine, but some come across as having a negative filter on it, which is just really weird. I did check on Chrome...
negative filtersolvedduplicatediconsopera