This is still happening to me on Ubuntu 12.04 64 bit with Sublime Text 3 and Google Chrome. When I use the HUD to activate a menu option in Sublime Text by pressing Alt, typing to filter and pressing up or down to select an entry, when I press Enter the menu option succeeds but after the HUD UI closes focus changes to Google Chrome.
This is still happening to me on Ubuntu 12.04 64 bit with Sublime Text 3 and Google Chrome. When I use the HUD to activate a menu option in Sublime Text by pressing Alt, typing to filter and pressing up or down to select an entry, when I press Enter the menu option succeeds but after the HUD UI closes focus changes to Google Chrome.