OK, running alpha. Found my first issue (also happens on the current stable build -07 26):
I use an app by Honeywell called Total Comfort TCC for my TSTAT (com.honeywell.mobile.android.totalComfort). I know from previous installs that in tablet mode, it forces landscape. On the Pixel Fold, when using this app in unfolded mode, the app works fine and forces landscape as expected (which is OK as the Pixel Fold unfolded is landscape).
However with the Pixel Fold folded, the app does not function properly and tries to force itself to landscape, but then immediately forces itself back to portrait and then back again in an endless loop that can't be stopped unless you unfold the Pixel.
One caveat: this only happens if the "Display size and text" from android settings is set to the lowest level for display size. Obviously this is causing the folded mode to be more like phablet size or some DPI setting that the app freaks out about. But I am not sure why it insist on switching back and forth endlessly.
I will mess with the DPI settings in developer mode to see what happens.
GOS Build number: Tq3C.230805.001.A3.2023080800