macOS Monterey 12.0.1 & Magic Mouse / Calendar Issues

Give this a try: boot into Safe Mode according to How to use safe mode on your Mac and test to see if the problem persists. Reboot normally and test again.

NOTE: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files

Same here.

But I even have an ""extra'' issue.

• Sometimes (about 1 out of 5 times) after putting the mouse off and on again the whole connection stays lost!

This is really time-taking because sometimes it's necessary to restart the Mac before it finding my mouse again...

So in my opinion it's bigger then just turning the mouse on and of in some cases.

So you have a M1 MacBook Pro, right?

Download and run Etrecheck.  Copy and paste the results into your reply. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC and recommended by Apple Support  to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.

IMPORTANT:

Before running Etrecheck assign Full Disk Access to Etrecheck in the Etrecheck's Privacy preference pane so that it can get additional information from the Console and log files for the report:

Also click and read the About info to further permit full disk access.

Copy the report

and use the Additional Text button to include the report in your reply.

It seems that turning off bluetooth, waiting until everything disconnects, and turning it back on fixed my problem. When I awakened my Mac this morning, bluetooth scrolling on the Magic mouse worked fine.

I have the same issue and it's driving me nuts. The scrolling comes back if I disconnect and reconnect it from Bluetooth but I do not want to have to do this every time my mac goes to sleep. Hopefully there will be a fix soon.

Exactly the same problem. Very annoying, especially when I bought a new Mac and a new Magic Mouse less than three months ago!

Also I can't get the 'non-hiding menu during full screen view' feature to work

Actually, yes, MBP M1 2020, Magic Mouse indeed loses the ability to scroll. Also - and possibly related - my Magic Keyboard sometimes acts up as well...

Tim? TIM!?!! Mr. Cook! Can you please look into this?

OK sometimes it helps to turn off your mouse, go to Bluetooth settings and remove the mouse from there then again set it up as a bluetooth mouse. If push comes to shove maybe even resetting the whole Bluetooth thing might work.

i have the same issue with my scroll on the magic mouse 2 (trackpad is fine), almost bought a new mouse. it seems like a bug with the new macOS monterey ; no issues opening my calendar tho - hope apple fixes this bug soon, it's quite annoying

Yes same issue, but thanks as you pointed out the fact if you rebooted the mouse it works...which at least is something! (I have experienced this before with an upgrade on previous Macbook - it was fixed eventually).

MacBook Air (M1, 2020)

In the last couple of days the scrolling with the Magic Mouse only failed once, requiring me to turn it off and on again. Before I reset the Mac's bluetooth, it failed every time the machine went to sleep. This is progress, though it should never happen.

I've noticed two further (related?) Monterey problems: Dictation frequently stops working, and the volume controls, while still working, don't show the visual representation of loudness, i.e. the strip of little white squares. Has anyone else tried these?

MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports) Using every day for work in a company of 200 computers, I'm the only Mac...

I'm also having problems with 12.0.1, Calendar is stalling and not responsive. When I open it sometimes it is blank and takes 1-5 minutes to populate all of the events. I also have trouble moving the window between monitors.. Also, not sure if it is related, but the calendar on my iPhone 11max pro is stalling as well. Hmmm...

Come on Apple,,, let's get this fixed.

I just upgraded to 12.0.1 in the hopes that, as suggested by the Apple folks, this might help the constant crashing of Adobe PSE. Immediately after completing the upgrade, scrolling issues started with my Apple mouse. A call to tech support for Apple seemed to surprise them as the claimed noone else had mentioned this issue. I am honestly losing faith in Mac products these days.

Thanks, I will try this.

I have found that turning off bluetooth for a while and turning it back on reduced the frequency of these scrolling outages from every time the machine woke up to about twice in 4 days.