iMac screen appears dark grey after user login

[halofan5691]

Has anyone experience after you login your user account, the wallpaper disappears to a dark grey for a few moments and wallpaper returns while loading dock and upper ribbon. I've notice this since Sonoma and Ventura..... I was hoping it would be fixed with Sequoia....

 

[Carbonide]

I've started experiencing this on my iMac Pro only after installing Sequoia. And it happens regularly while using it (every 1 to 2 hours approximately).

 

[halofan5691]

Recently I removed my wife’s user account, since then it hasn’t happened hardly at all, once maybe 1-2 seconds on the gray screen, also the Bluetooth disconnecting my keyboard or mouse issue have disappeared. Hmmmm…

 

[halofan5691]

I've started experiencing this on my iMac Pro only after installing Sequoia. And it happens regularly while using it (every 1 to 2 hours approximately).

Has anyone contacted Apple regarding this? It has been going on since Monterey..