[Bug 1446865]

[Thomas-luebking]

Well, "shrug, I don't care then" - Qt seems to be dropping desktop
support anyway, so it probably doesn't really matter.

For principal reasins I'd however object " proven to be not broken by being around for over 10 years":
It wasn't "broken" because one major client class (KDE) simply replaced that "unbroken" code.

Nor did I mean to support directly "changing behavior" - I simply
suggested to raise awareness of the problem by intercepting "this looks
unimplemented" conditions to allow getting rid of the "unbroken" code in
Qt6 w/o pain.

Closing windows certainly is wrong (and apparently wasn't done before
Qt4, seems more like a closeEvent was faked previously) because it
alters the session even on a canceled session exit, regardless on
whether it breaks restoring them (which one would kludge away in the
session manager)


Ok, bottom line is SM is FUBAR on Qt5 and there's no intention to ever fix that, merely re-allow client code to bypass the broken Qt behavior. I'll tag future bugs respectively.

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https://bugs.launchpad.net/bugs/1446865

Title:
  KDE5/Qt5 does not support session restoration

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