I have only tested this on Safari.
If I sign into the web version and I uncheck the remember me box, qc will stil llog me in; however the connection is broken.
It will show an incorrect credentials message, and it won't resolve until I sign out and sign back in, checking the box.
Disconnecting from the playroom doesn't work, i have to completely sign out and back in.

hello,
you are right, this is an old known bug. this is fixed in the new version, but for the moment we have to deel with it intill the new version came.

Hello,

To make it clear, there won't be any update to the web client and the website until we have fixed sighted bugs.

It's in your interests to find as many people with as many browsers/systems/devices as possible. No one reacted during the beta, so, sorry, we are now in emergency mode.