Annoying bug in QT6

[Benoît Minisini <benoit.minisini@xxxxxxxxxxxxxxxx>]

Hi,

I noticed a weird behaviour in the IDE form editor for a long time: as 
soon as the width or the height of a control is just one pixel, it 
becomes invisible to mouse events.

I just discovered that it occurs only when using 'gb.qt6', not with 
'gb.qt5', and not with 'gb.gtk3'.

As both share the same code for this matter, this is obviously a QT6 bug.

I'm currently rewriting how the IDE form editor detects what is under 
the mouse cursor, as a workaround.

But there is no way I can globally workaround or fix that at the moment!

Regards,

--
Benoît Minisini.