I have added an experimental solution named "MRIcroMTLforMacOS_Sonoma.zip" that you can download from here:

   https://github.com/rordenlab/MRIcroGL/releases/tag/v1.2.20220720

I have noticed two small issues:

 1. The application menu with the Settings and Quit menu items is not displayed.

 2. If you choose the "Multiplanar (A+C+S+R)" item from the "Display" item, you may seem some transient artifacts when you click on the rendering.

Tell me if you find any other issues.