Already not funny. Version: 110.0.5130.64. Issues still there (don't know already how much updates, but few month+). Earlier they already tried to fix similar issue (DNA-113080), but it happens again (or it new bug).
Three computers, same version. Two of them (win 10) - Cross icon not appears time to time on any tab (reproduce it just if move cursor up-down on any tab). Tried and remove extensions, and clean install, and create new profiles - nothing changed. Even in virtual machines it happened on new OS and new installation. Now on brand new laptop with Win11 it has a bit another issue - cross icon shows normally, but it can't close the tab - need move cursor up-down few times (or close by Ctrl+W or scroll button).
Opera team, seriously. Are you hear your users and going to fix that? For now on working laptop even switched to use Firefox instead, because unreally use browser with this issue.