2026-02-22T18:22:35Z Ricardson <[email protected]>:
> In my case the root cause is 1wm, which moves every window to 0,0 on
> ConfigureRequest with no EWMH awareness, leaving Firefox with corrupted
> session state.
The root cause is Firefox, which should include a built-in mechanism to
override the saved geometry without erasing or manually altering the
saved state. Likewise, recent versions of Firefox unfortunately use
Wayland, so useful X.Org-based tools, such as wmctrl, won't be able to
manipulate its window. I'm talking about somwthing like
wmctrl -r Firefox -e 0,100,100,640,480
# | | | | height
# | | | width
# | | Y position
# | X position
# gravity
You could alter xulstore.json using jq:
cfgfile=$(find ~/.config/mozilla -name xulstore.json | sed 1q)
mv "$cfgfile" "$cfgfile.bak"
jq '.[]."main-window" |= {
screenX: "100",
screenY: "100",
width: "640",
height: "480",
sizemode: "normal"
}' "$cfgfile.bak" > "$cfgfile"
or simply delete the file and have Firefox regenerate it.
