Can someone test and confirm this please?
In the site overview “Manage Sites” I can select / unselect all with the checkbox on top, but not with the checkbox on the bottom
edit: I just found it here as well, but the topic is closed so I am not sure if this is still tracked somewhere else
I only noticed is, as I used MainWP now to access /wp-admin in bulk in batches of 10 sites, eventually I reached the bottom and tried to unselect all selected and it didn’t work there.