Broken: Universal Control Keyboard Mouse Sharing OS Sequoia 15.0

Just updated today and am having the same issues on Sequoia and iPad os 18. I use Mac mini M1 and M4 iPad Pro. It will share the keyboard and trackpad from MM for a minute or so then disconnect then randomly reconnect. I've tried turning off the share function, restarting, re-enabling, turning off and on wifi and bluetooth and nothing fixes it. The weird thing is that the MM has no problem screen mirroring or extending to my iPad so THEY SEE EACH OTHER. Something is broken with share keyboard/mouse/trackpad specific function. My iPad is my primary work device that I would love to be able to share with my MM. Like Kasezilla said "it's killing my workflow". APPLE PLEASE FIX!

UC was working perfectly for me prior to the recent Sequoia 15.5 upgrade (and previous iterations it appears from these posts)

My secondary MBPro is still running Sonoma (14.6.1) however so perhaps for me it's an incompatibility issue. although from the posts here I'm not filled with confidence. Will try upgrading prior to throwing mud Apple's way.

I've tried all the steps posted here but still no luck - it may help others in this predicament and although it's a few years old, the steps are still relevant:

https://www.reddit.com/r/apple/comments/tf488r/psa_fixing_universal_control_if_it_doesnt_work/

Apple knows about the issue, they are just choosing not to fix it. I went through a period of literally a month and a half to two months of essentially being a bug tester for them when I reported the issue.

Their first tactic is to try to find fault with your equipment or that you’re doing something wrong. When that wasn’t the case, I only ended up getting a “Well, they know there’s an issue and we’ll get back to you when it’s fixed.” that was months ago.

Apple stuff used to just work. That’s not the case anymore, there are so many bugs that they are just not fixing. Probably because they want to make Siri so filled with AI. It’s ridiculous.

Seeing the same issues. In addition, when it is "working" I get doubled up "space" characters, causing the iPad to routinely think I've hit the spacebar twice, leading to inserted period (.) and capitalization I don't want.

Same for me. It kills my workflow.

Problem persist even after updating to Sequoia 15.1 on the Mac Studio and the iPad.

The most frustrating is that this seems to be random. At times (rarely) it will suddenly work (for a few minutes), and then stop working.

It is with a heavy heart that I come to report that the recent upgrade to 15.2 broke universal control again :( It was working fine for me in 15.1, but now keep losing connection between macbook and new mac mini both running 15.2. UGH. The two machine keep flipping in an out of connectivity with each other every few minutes. You can open the Displays panel in System Prefs on both machines and just watch the other display appear and disappear every few minutes. This is very upsetting.

I upgraded to MacOS 15.2 today. UC worked! At least, for a while. Perhaps 10 minutes without so much as a hitch. There are signs of life, and it's certainly better than it has worked on any MacOS 15 release, but it's still dropping out regularly (and I can see that it's becoming "out of sync" with one computer displaying that it is working correctly, and the other not showing connection).

Something has been done, but I'm going to complain again because this is the third release that hasn't resolved the issue.

Yes, after upgrading to 15.2 it also worked for me… twice… for about 10 min the first time, and a few minutes the second time. Since then, nothing, nada.

Mac Studio with iPad Pro 12.9, with UC to control 3rd gen iPad running the latest iOS.

Hello greg2u! Well, I spoke too fast. After working a couple times following the upgrade of the iPad Pro 12.9 to 18.2.1, UC decided to go AWOL for good. It's been ten days now that it's been impossible to make it work, even for a minute or two. Turning machines on and off, switching UC on and off, on either or both machines... nothing... The whole thing is a mystery...

UC definitely does not work even after upgrading to 15.3.

Upon investigation it seems to be a matter of distance to the Mac (M2max). UC on the iPad works until a certain distance, but not further.

On the other hand, Sidecar works well to extend screen to the same iPad, both at close and far distance.

Just weird.

Beyond frustrated. Two Macbook Pro laptops side by side for years, Universal Control made it so much easier.

Since updating to Sequoia- completely unusable.

Both on the same wi-fi network. Both logged into the same iCloud account. Both on Sequoia 15.4.

Open either machine's settings, displays- and you can sit and watch the other machine's display show up, then 3 seconds later, disappear. This repeats endlessly.

Main machine on the left for work has the Apple keyboard and magic mouse paired. Second machine for photography on the right- and now is essentially unusable thanks to the buggiest upgrade I've ever done. Seriously regret upgrading either device now.

I occasionally had the issues described but when my M4 mini and Air M2 upgraded to 15.4.1 it stopped working altogether. This is such a great feature but it is a shame it doesn't work very well. I have four 34" monitors two on each and loved being able to just use one keyboard and mouse and cut and paste between the two. Made my work so much easier.

I now have two keyboards and two mice and no cut and paste - such a pain.

This is broken again with 15.2