This is more of a bug report. Furthermore, when I went to the support page, there is no way to just submit a report, only live chat and phone (which is already a horrendous customer service blunder. Submitting reports without having to go through a live person first should be a standard option, especially when those options available aren't even working correctly!) and when I tried live chat, it just didn't work; the button was completely broken, so that's really bad too (tried this on multiple browsers).

The bug report: Mx Master 3S, Windows 11. Logi Options+: Custom profiles for Vivaldi browsers flatly do not work. Not only do they not work, but it doesn't even have the correct default behaviors; forward and back buttons instead do page up and page down, thumb button tries to quit the program, and horizontal scroll does nothing. It worked when I first got the mouse last year, but since it started happening a few months ago, it has persisted through multiple updates. All research points to this being and Options+ issue, not a Vivaldi issue. I switch between 2 mice depending on needs, but honestly, if it weren't for the quiet clicks, horizontal wheel, and the fact that custom profiles work for at least -most- programs, I would get rid of this mouse altogether.