[Interest] Main thread (or maybe Quick rendering) freezes when screen turns off?

[Alexander Dyagilev]

Hello,

It seems that there was a new behaviour introduced since Qt 6.9 (at least
compared with Qt 6.8.2 --> Qt 6.9.3).

We have a long operation in our app and the user can choose an option to
shut the PC down upon its completion.

Upon completion, we show a confirmation dialog with a count-down timer (we
use QML Timer for this).

All was working fine prior to 6.9.3. Since 6.9.3 operation completes, but
nothing happens. When the user turns on the monitor our app shows this
confirmation dialog with a countdown timer started.
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