Any news on the getting window app's to work with MacOS Ventura?

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 1: 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

NOTE 2: if you have a wireless keyboard with rechargeable batteries connect it with its charging cable before booting into Safe Mode. This makes it act as a wired keyboard as will insure a successful boot into Safe Mode.

Just my 5¢ here, but I´ve been using "Moom" window manager for years, currently on an iMac running the latest Ventura 13.1. No problems whatsoever, so it might be worth having a look at it. A most useful app! You can get it here from the developer´s site:

https://manytricks.com/moom/

Hope this helps you! Cheers!

Add-on UI tweaks and hacks and customizations tend to be short-lived.

Changes to the UI can increasingly run afoul of security and integrity changes implemented by Apple; anti-malware.

Do contact the vendors.

Best long-term solution (for the third-party vendors) is if Apple adds customization APIs, or best long-term (for you, and not the third-party vendors) is if Apple adds support for whatever: Product Feedback - Apple

You might want to contact the respective developers.

https://magnet.crowdcafe.com/contact.html

https://ryanhanson.dev/contact

These kinds of apps are very difficult on modern macOS. For one thing, the Mac itself is a tiny fraction of the market. The best you can do is someone working part-time while looking for a real job. Trying to distribute via the Mac App Store is even more difficult, both technically and financially. And then there are free, open-source alternatives. Then a new operating system comes along with a new set of bugs and Apple developing its own window manager.

These kinds of system hacks are an un-ending exercise in frustration.

JohnnyDeLuxe wrote:

Sorry, what happens is that the app is running and is in my menu, and the commands are seen in the menu but are greyed out.

FWIW, with both Monterey & Ventura the commands are grey however they work for me on both.

Ventura screen shot. Monterey appears the same.

If it isn't working to your satisfaction then I suggest you email them, since their site doesn't have a support page. https://magnet.crowdcafe.com/contact.html

FWIW, I have Magnet installed on one of my Macs running Ventura. I hadn't even used it since upgrading. However, I just tested it and it seems to work just fine after sleeping my Mac. What do you mean by "it does not work"?