We're still running the older version:

Build 8451 (Feb 20, 2023)

Here's the new issue we've just run into.  I send a Google Meet request to a person.  The meeting request works fine, and can be accepted rejected on any browser on the Mac.  When you go to your calendar to open the event, Safari, Chrome, and Firefox all fail to render.  Tested on latest Somoma 14.4

FireFox: This page is slowing down FIrefox. To speed up your browser, stop this page.

Safari: Empty window, and original browser stops functioning

Chrome: Pages Unresponsive You can wait for them to become responsive or exit the pages.

They work fine on Windows 11, Outlook (Win/OSX), Apple Calendar, and everything else, so I'm thinking something very specific to Apple's sandboxing rules on browsers.