Middle Click to open new instance broken by July updates - Fix?

I just installed the 23H2 July updates yesterday. (yes July)

Now when I middle click on the explorer icon pinned to my start bar after one instance of explorer is already open, it resizes the running instance instead of opening a new instance like it has always done.

FYI In system multitasking I have 'snap windows' on but all the options below that turned off. I tried changing all those settings and it doesn't make any difference.

Does someone know a fix to get middle click to open a new instance again?