QColorDialog::getColor - window size affected by previous dialog

After showing a QMessageBox the next time you call QColorDialog::getColor the window size will be slightly taller than the QMessageBox, if you call QColorDialog::getColor the window size will get even taller.. by the 3rd or 4th time you call QColorDialog::getColor the window will actually be the "standard" size (about 400px tall on landscape mode).

pseudo-code:

// ....

QMessageBox::warning(parent, "title", "short text");
QColorDialog::getColor( ... ) // a little taller than the previous window
QColorDialog::getColor( ... ) // a little taller than the previous window
QColorDialog::getColor( ... ) // a little taller than the previous window

it seems that if I call getColor without having showed a smaller dialog first with the same parent that it will start with a "good" height

See attached screenshots