Your comments

Workaround: only use 8.3 char filenames.

Seriously though, this would be a good feature - especially as Chrome and other browsers are setting "standards" for tab behaviour. Using the mouse, closing a number of tabs becomes a target-shooting game. Wait, I have a keyboard!

Workaround 2, then: ⌘W to close tabs. Until the tab close behaviour is improved. Or middle button as Tomek says.

Related - I think Chrome and STE have different behaviour for tab focus - STE takes you back through most recently viewed tabs, while Chrome I think moves you one tab to the right.
posted to forum also: