Palemoon doesn't notice change of screen resolution after restart

[wolf_]

When you are using palemoon over VNC on screen of different resolution than your normal PC screen, palemoon doesn't notice change in it's maximized size until it's resized.

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$ uname -r
4.4.5-1-ARCH

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$ palemoon -v
Moonchild Productions Pale Moon 26.2.0

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VNC resolution: 1920x1080
Normal resolution: 1366x768

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Window manager: Awesome WM
$ awesome -v
awesome v3.5.9 (Mighty Ravendark)
 • Build: Mar 12 2016 01:11:40 for x86_64 by gcc version 5.3.0 (builduser@rw)
 • Compiled against Lua 5.3.2 (running with Lua 5.3)
 • D-Bus support: ✔

in tiling mode <-- this is imho cause of the issue

Duplication sequence:
1) connect over VNC to PC
2) start palemoon as only window on awesome wm tiling mode desktop (resolution 1920x1080 since over vnc)
3) shutdown pc
4) start pc
5) start palemoon on normal X server (resolution 1366x768)

Actual result:
6) palemoon thinks it's still in 1920x1080

Expected result:
6) palemoon thinks it's in 1366x768

NOTE: spawning new terminal (therefore cutting size available to palemoon in half) triggers resize event and everything starts working correctly again even when the terminal is closed again

PRIORITY: probably low, no security impact and easy (bug annoying) workaround exists