And, indeed, even if such OPENBAR button has the "Run minimized" checkbox turned on, clicking the button did not show the child bar as a menu but switched to the new bar.20.03.12 Fixed: Button bar: Do not show triangle overlay for buttons with command "OPENBAR" when "minimized" is checked. Leave out "OPENBAR" to show .bar file as menu (32/64)
However, in 8.0β25 this behaviour changed, and OPENBAR + "Run minimized" now again shows the child bar as submenu instead of opening it. I cannot see any entries in the history of β25 about this change, so I suppose it is just an accidental side effect.
PS: However, if I'm mistaken and the previous behavoiur was returned deliberately, then TC should recognize this pattern and display "Show as menu" checkbox instead of "Run minimized".