Setting to only automatically group tabs from same domain is not working, if I click on a link to open in new tab (and this link is from a different domain), it's still grouped.

Also doesn't work with android tab groups.

Another thing is that when you have auto ungroup when last tab enabled, when you close 1 tab from group with 2 tabs, and then hit ctrl + shift + T (to reopen tab that was just closed, the tab group is not restored).