Radiobuttons are duplicated during `reset_choices` in Qt <5.15.2

Describe the bug

When creating a napari plugin and adding RadioButtons widget with magicgui, every radiobutton appears duplicated (see screenshot).

To Reproduce

Create a simple plugin consisting out of a single group of RadioButtons

from napari_plugin_engine import napari_hook_implementation
from magicgui import magicgui

def wrapper():
    @magicgui (
        choices = dict(widget_type='RadioButtons', label='Choices',
                   orientation='horizontal', choices=["A","B","C"])
    )
    def widget (
            choices
    ):
        pass
    return widget


@napari_hook_implementation
def napari_experimental_provide_dock_widget():
    return wrapper, {'name': 'BUG'}


if __name__ == '__main__':

    import napari

    with napari.gui_qt():
        viewer =  napari.Viewer()

        key = ("BUG", "BUG") 

        viewer.window._add_plugin_dock_widget(key)

Screenshots

Environment (please complete the following information):

OS        OSX 10.15.7
QT        5.15.1
napari    0.4.6
magicgui  0.2.8.dev14+g9590805

[tlambert03]

fixed in #198 … will release another patch release (0.2.9) shortly

[maweigert]

Sure, thanks for the super fast response!

And yes, I didn’t see it in plain magicgui so moving the napari might make sense.