Proposed Assignee: @ Maxim Koltsov ?
More detailed findings described in awesome issue #598
[ https://github.com/awesomeWM/awesome/issues/598 ], comment 2017-05-01 19:01
Finally I could identify the **patterns**:
X11: creating 4 separate X11 screens
XFCE: creating 2 x 2 "Workspaces"
C) _Thunar_ spawns the apps (...) from file context
- onto that (wrong) X11 screen where (after starting X env)
the _last_ instance of Dolphin had been started
- (regardless if this _last_ instance has been closed in between)
- onto the currently active "Workspace"
XFCE_Bug 13547 -
[Multiple separate X11 screens] [Multiple WMs] Thunar spawns applications on current active tag of wrong X11 screen
[ https://bugzilla.xfce.org/show_bug.cgi?id=13547 ]
Although confirmed as working stable multiple times,
unfortunately, Elv13 stated that nobody @ Awesome would care about
independent X11 screens ("ZaphoMode") any more;
c.f. https://github.com/awesomeWM/awesome/issues/598#issuecomment-305114301 ff.
No sign of interest stated by leading upstream (=XFCE) developers.
f really nobody cares besides me,
I do not mind to close as "WONTFIX".