This apparently fatally upsets the WM on FW >= 5.12.4
I don't have the HW to test it, and I've been saying FW 5.12.x is evil
from the get go, so, eh.
Re #6117
# Less drastically, we'll also be "minimizing" (actually, resizing) the title bar manually (c.f., https://www.mobileread.com/forums/showpost.php?p=2449275&postcount=5).
# NOTE: Hiding it "works", but has a nasty side-effect of triggering ligl timeouts in some circumstances (c.f., https://github.com/koreader/koreader/pull/5943#issuecomment-598514376)
# FIXME: There's apparently a nasty side-effect on FW >= 5.12.4 which somehow softlocks the UI on exit (despite wmctrl succeeding). Don't have the HW to investigate, so, just drop it. (#6117)