I did have a similar problem playing original 2025 game, screens goes dark, game still running, can hear it, does indicate no video signal received, have to reboot manually, can't access apps manager, did went around this problem by turning off saving screen and other display properties, although it did happen sometimes but less frequently, now I have the same problem since I did install 2026 extension, can't find anything else to do to go around this problem.
For 2025, did notice that the problem was not happening or very rarely when using vr, did not check for 2026 extension.
System specs
Intel(R) Core(TM) i9-10900F CPU @ 2.80GHz (2.81 GHz)
NVIDIA GeForce RTX 3080 (10 GB)
Windows 11