QComboBoxListView(0x2465b85e250) does not have a property named "yBorder"

[jabza]

I'm setting the border of a QComboBoxListView, which does work, however, the following error message fires every render:

QComboBoxListView(0x2465b85e250) does not have a property named "yBorder"

I can't remover the border here as the styling is needed, not much documentation that I can find - but the border style is being applied so this error seems to be a false positive?