An Edge odditity in MacOS 26.2 - it seems to block monitor sleep mode

Yesterday I upgraded my Mac from OS 26.1 to 26.2. Everything seemed fine. I went to sleep like I usually do keeping my MBP (M1, 2021) open and my external monitor on. I came downstairs in the middle of the night and saw my monitors were still on!

Eventually I tracked down the problem with the help of ChatGPT. It seems that Edge is causing that problem.

I quit Edge and went for my morning walk and when I came back the monitors had gone to sleep as usual.

Anyway else see that?