Public bug reported:
If I tap the touch screen on a menu item that brings up a submenu in qt
related apps, the submenu will appear for about one second, and then
disappear. However, if instead of tapping and releasing on the menu
item, I tap on the menu item and move in any other direction just a tiny
bit, and then release, the submenu will appear and stay like normal
behavior.
Below are specific examples and the pattern seems to be with qt related apps:
QtCreator - Tap on the Tools menu. Then tap on the Git menu. The submenu will
appear, and then disappear after 1 second. If instead of tapping on the Git
menu, you tap and drag a few pixels to the right, the submenu will appear and
stay.
Dolphin file manager - Tap on "Control". Then tap on "View Mode". The submenu
will appear, and then disappear after 1 second. If instead of tapping on "View
Mode", you tap and drag a few pixels to the right, the submenu will appear and
stay.
Kate text editor - Tap on the "Tools" menu. Then tap on "Mode". The submenu
will appear, and then disappear after 1 second. If instead of tapping on
"Mode", you tap and drag a few pixels to the right, the submenu will appear and
stay.
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Expected Behavior: The submenu should stay until I make a selection or
cancel.
What happened: The submenu appears only for 1 second and disappears.
However, if I "trick it" by tapping and dragging on the menu item, the
submenu will stay as normal.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: qt submenu touch
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https://bugs.launchpad.net/bugs/1658550
Title:
erratic behavior with touch on submenus in qt related apps
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