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Not working in 11.6. It'll work fine for a little bit then without warning just stop.
 
Update, I first updated Logi Options which is much harder than it needs to be. Click More in the lower lefthand corner, Software in the lefthand options, then check for update. The problem fixed itself after the update, then returned after about an hour later.

After making sure Logi Options was closed, I deleted Logi Options and Logi Options Daemon from the Privacy -> Accessibility group. Upon relaunching Logi Options it immediately added "Logi Options" back to the group. Overnight I had a request to re-add the Daemon both to that group, and to the Input Monitoring. Some process must have run overnight to trigger this request.

Today everything has been working as long as it ever has. I think this is what you need to do if you are still having problems.
 
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Thanks for the Accessibility tip. I finally upgraded to Big Sur once Mojave was officially left unsupported by Apple a couple of weeks ago and have had all sorts of small issues. This was one of them. Mouse scrolling and forward back browser buttons stopped working a few times. Restart seemed to fix it but what a hassle in the middle of work!

I switched to the Unified dongle because of bluetooth issues with the Mac Mini. Spotty signal. No issues with my M1 MacBook Air (so far).

Has the scrolling issue been fixed for you ever since you posted in September?
 
Thanks for the Accessibility tip. I finally upgraded to Big Sur once Mojave was officially left unsupported by Apple a couple of weeks ago and have had all sorts of small issues. This was one of them. Mouse scrolling and forward back browser buttons stopped working a few times. Restart seemed to fix it but what a hassle in the middle of work!

I switched to the Unified dongle because of bluetooth issues with the Mac Mini. Spotty signal. No issues with my M1 MacBook Air (so far).

Has the scrolling issue been fixed for you ever since you posted in September?
Almost hate to respond because things have been working. ;)

I don't remember doing anything after what I mentioned in my last post. Like I said over 24 hours some weird stuff was happening behind the scenes and at the end of it all it fixed itself.

The only remaining issue I cannot figure out is why my machine will not boot when I have my miniStack MAX (dock, Time Machine drive, blue-ray drive) plugged in. I have to disconnect it to get the machine to boot. Once it's up and running I can plug it back in and everything works fine. Go figure?
 
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