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_NET_WM_STATE_HIDDEN broken on i3 --replace #6578

@tycho-kirchner

Description

@tycho-kirchner

Welcome

  • Yes, I'm using the latest major release or the current development version. These are the only supported versions.
  • Yes, I've searched similar issues and discussions on GitHub and didn't find any.

Current Behavior

Recently, i3 added support for the _NET_WM_STATE _NET_WM_STATE_HIDDEN (s. #4353. However, upon restart, this property is not set correctly in all scenarios. Instead, a visible window may have _NET_WM_STATE_HIDDEN set.

Expected Behavior

_NET_WM_STATE_HIDDEN should be correct.

I think i3 should

  • clear _NET_WM_STATE_HIDDEN on exit (in case other wm's do not know it)
  • on startup, re-evaluate for every window, whether _NET_WM_STATE_HIDDEN is
    correctly set
  • maybe, also set _NET_WM_STATE_HIDDEN also on the toplevel window, not only
    on the client window, like it is also convention for _NET_WM_WINDOW_OPACITY

Background: A user of my composting manager fastcompmgr opened this issue essentially requesting first-class support for _NET_WM_STATE_HIDDEN. I added this feature, but I think that this should not have been as involved as seen in 84912f287

Thanks, Tycho

Reproduction Instructions

  • configure i3 to workspace_layout default
  • open two terminals
  • "restart" using i3 --replace & (i3-msg restart is insufficient)
  • Now, one of the terminals, TermA, received i3's focus
  • Switch to tabbed layout and in TermA (again!) execute i3 --replace &
  • TermA and TermB are now visible side-by side. In TermB, execute
    id=$(xdotool getactivewindow); xprop -id $id _NET_WM_STATE
  • xprop returns _NET_WM_STATE_HIDDEN which is wrong. Also note that
    _NET_WM_STATE_FOCUSED and _NET_WM_STATE_HIDDEN should never be set at the
    same time

i3 version

Binary i3 version:  4.25-16-g49cbf9a6 © 2009 Michael Stapelberg and contributors

Running version: < 4.2-200

Config file

set $mod Mod1
font pango:monospace 8
workspace_layout default
floating_modifier $mod
tiling_drag modifier titlebar
bindsym $mod+Return exec i3-sensible-terminal
bindsym $mod+Shift+q kill
bindsym $mod+d exec --no-startup-id dmenu_run
bindsym $mod+j focus left
bindsym $mod+k focus down
bindsym $mod+l focus up
bindsym $mod+odiaeresis focus right
bindsym $mod+Left focus left
bindsym $mod+Down focus down
bindsym $mod+Up focus up
bindsym $mod+Right focus right
bindsym $mod+Shift+j move left
bindsym $mod+Shift+k move down
bindsym $mod+Shift+l move up
bindsym $mod+Shift+odiaeresis move right
bindsym $mod+Shift+Left move left
bindsym $mod+Shift+Down move down
bindsym $mod+Shift+Up move up
bindsym $mod+Shift+Right move right
bindsym $mod+h split h
bindsym $mod+v split v
bindsym $mod+f fullscreen toggle
bindsym $mod+s layout stacking
bindsym $mod+w layout tabbed
bindsym $mod+e layout toggle split
bindsym $mod+Shift+space floating toggle
bindsym $mod+space focus mode_toggle
bindsym $mod+a focus parent
set $ws1 "1"
set $ws2 "2"
set $ws3 "3"
set $ws4 "4"
set $ws5 "5"
set $ws6 "6"
set $ws7 "7"
set $ws8 "8"
set $ws9 "9"
set $ws10 "10"
bindsym $mod+1 workspace number $ws1
bindsym $mod+2 workspace number $ws2
bindsym $mod+3 workspace number $ws3
bindsym $mod+4 workspace number $ws4
bindsym $mod+5 workspace number $ws5
bindsym $mod+6 workspace number $ws6
bindsym $mod+7 workspace number $ws7
bindsym $mod+8 workspace number $ws8
bindsym $mod+9 workspace number $ws9
bindsym $mod+0 workspace number $ws10
bindsym $mod+Shift+1 move container to workspace number $ws1
bindsym $mod+Shift+2 move container to workspace number $ws2
bindsym $mod+Shift+3 move container to workspace number $ws3
bindsym $mod+Shift+4 move container to workspace number $ws4
bindsym $mod+Shift+5 move container to workspace number $ws5
bindsym $mod+Shift+6 move container to workspace number $ws6
bindsym $mod+Shift+7 move container to workspace number $ws7
bindsym $mod+Shift+8 move container to workspace number $ws8
bindsym $mod+Shift+9 move container to workspace number $ws9
bindsym $mod+Shift+0 move container to workspace number $ws10
bindsym $mod+Shift+c reload
bindsym $mod+Shift+r restart
bindsym $mod+Shift+e exec "i3-nagbar -t warning -m 'You pressed the exit shortcut. Do you really want to exit i3? This will end your X session.' -B 'Yes, exit i3' 'i3-msg exit'"
mode "resize" {
        bindsym j resize shrink width 10 px or 10 ppt
        bindsym k resize grow height 10 px or 10 ppt
        bindsym l resize shrink height 10 px or 10 ppt
        bindsym odiaeresis resize grow width 10 px or 10 ppt
        bindsym Left resize shrink width 10 px or 10 ppt
        bindsym Down resize grow height 10 px or 10 ppt
        bindsym Up resize shrink height 10 px or 10 ppt
        bindsym Right resize grow width 10 px or 10 ppt
        bindsym Return mode "default"
        bindsym Escape mode "default"
        bindsym $mod+r mode "default"
}
bindsym $mod+r mode "resize"
bar {
        status_command i3status
}

Linux distribution & Version

Debian 12

Are you using a compositor?

I am sure I don't run any compositor

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