Tree Style Tabs option doesn't work

"Tree Style Tabs" option doesn't work as intended on latest Chrome (91.0.4472.101). A new tab is created at the far right, but subsequent new tabs do open as children of the first new tab.

Also it would be nice to reverse default Chrome order for opening links by Ctrl-click, so every new tab is opened next to parent one (right after a parent tab, but not after last opened child tab).