I am using a hotmail account for the account as well as for the insider program. With the release 22000.51 the panel actually acted different vs the new 22000.65 release. .51 brought me to the settings window where it showed nothing related to widgets. The .65 show a slight different panel with different text. I do get a login screen but after putting in credentials it doesnt respond anymore and crashes each and every time.
Another note, with .51 i still had the old Microsoft Store, now with ,65 i do see the new Mircosoft Store.
The MS store was update in 22000.51, if you used the command to get updates.
As for the sign in screen for the widgets it looks normal, I have no idea why it crashes on your machine.
Only problems I've seen so far were due to the display adapter drivers.