Re: [Gimp-user] Bug in "arrow" plugin, possible bug with tear-off menus

[Steve Kinney <admin pilobilus net>]

On 12/19/2016 02:20 AM, mark_at_yahoo via gimp-user-list wrote:

> Problem #2: Tear-off menus (2.8.16 again) don't work, at least in my
> environment (Linux, X11, FVWM window manager). For example,
> right-click-and-hold in an image window, move down to "Colors >", move
> across to the submenu and down to "Invert" and release -- that works.
> But right-click-and-hold, move down to "Colors >", move across to the
> top "-----" line and release to create a tear-off menu. Then in that new
> "Colors" menu/window, click on "Invert" and nothing happens. (Actually,
> something does -- the message area in the lower right corner of the
> image window changes to say "Invert the colors", but the image doesn't
> change.) Same (no)thing with menu items that should pop up a dialog
> window, like "Levels...". But doing a deeper submenu from the tear-off
> menu, like "Map >" and then "Alien map..." from there does work.
>
> I couldn't find this on Bugzilla. Can anyone else recreate it? 

To duplicate this behavior, use the tear off menu function on Linux.
That's it:  As far as I know, it's the same with all distros and window
managers:  I have seen it on Ubuntu and Mint (both Debian based) and
under Gnome, Cinnamon and XFCE4.  I think it's a GTK+ thing but don't
quote me on that.

Work-around:  Left click the menu item on the torn-off menu to select
it, then press the space bar on your keyboard to "make it work."

Why/how the space bar does that is way above my pay grade.  It's been
that way for so long that I don't remember if I stumbled on the space
bar trick by myself, found it by searching the network or read it here.
But I do recall posting something about it, and at least one "real"
expert replying to the effect that she had the same problem and did not
know there was a work around.

:o)