I was dealing with an identical case today (or maybe the report/scene originally came from you? :) )
The solution was the good old "lock icon in Render Setup", so:
- Press Alt+W to show all viewports
- Open Render Setup
- Click on the viewport you want to render
- Lock the small lock icon at the top of the Render Setup window
- Then render
I hope this helps!
I haven't submitted the scene, but it seems to still be an issue with the scene. On first scene load, it will not render. Just shows the VFB with the corona icon smiley (I'm using old interface) turned just a little bit. But nothing going on in stats, the render button is grayed out and "stop" is blue as it usually is when rendering. I noticed that the usual max pop up with "loading geometry" etc wasn't showing. I shut down max. This will keep happening, so I have to shut down max. Start it again, and then it works.
The icon lock is always on in my settings and haven't changed since pre the win 11 update, so don't think that is the case.
Interactive rendering + slate material editor open is a horrible experience on this CPU still (3990x). Even viewport is very laggy. Had hoped win11 would have fixed something.
I will do an archive and send to you to see if you can reproduce.