https://bugs.kde.org/show_bug.cgi?id=448141

--- Comment #6 from Tom B <t...@r.je> ---
Sorry for keeping posting here, but something else strange is going on...
QT_WAYLAND_FORCE_DPI  works as expected until 143. As soon as I set it to 144,
clicks stop registering.

However:

1. 144 looks significantly larger than 143 (I should not be able to tell the
difference 144 and 143 without comparing them side by side) 
2. The default dpi is 96 (verified by comparing launching with it forced to 96
and not set at all). It can't be a coincidence that 144 is a scale factor of
exactly 1.5 and it's at exactly 1.5x DPI that things break. There must be
something in the code that says if the scale >= 1.5 handle it differently. But,
strangely, a scale factor of < 1.5 does not work either (with
QT_SCALE_FACTOR=1.1 the click events are still broken, but scaling using
QT_WAYLAND_FORCE_DPI works fine until the equivalent of 1.5x.

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