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"
Upstream: 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".