#894 Different window iconized with multihead + current monitor only

[Mamoru TASAKA]

While I was debugging https://sourceforge.net/p/lxde/bugs/888/ , I noticed other odd behavior with multiple monitor and "current monitor only" option.

Details:

• Prepare 2 monitors, and launch LXDE session
• On one desktop, launch 3 same application windows, e.g. 3 lxterminal windows.
• On lxpanel, choose "SameMonitorOnly" option on , also "GroupedTasks" on, on the taskbutton plugin
• Leave only one lxterminal window to the monitor which lxpanel exists, and move
  2 other lxterminal windows to the other monitor
• Once "lxpanelctl restart" when bug 888 is not fixed.

Now we see that taskbutton shows only one lxterminal window.

• Now focus on one of the lxterminal windows on the other side of lxpanel monitor, and
  then focus on the other of the lxterminal window on the other side of lxpanel monitor.
• Then press "lxterminal" button of taskbutton

Expected result:
lxterminal window on the lxpanel monitor raises up

Actual result:
Firstly one lxterminal window on the other side of lxpanel monitor is iconised,
then the other lxterminal window on the other side of lxpanel monitor is also iconised.
Finally the left one lxterminal window on the same side of lxpanel monitor is
iconised, but from taskbutton only one window iconized can be shown.

[Mamoru TASAKA]

Proposal patch here