I have two GuiButtons in this constellation facing the same problem:

They have an ImageLabel (Vignette) drawing a semi-transparent image over them. It has 1,0,1,0 as its size. On PC, everything works fine, I can click the buttons. However on my phone (and even in the Studio emulator) clicking the buttons does nothing. I can confirm this is caused by the ImageLabels because when I remove them everything works as expected.
Is this behaviour intended? What can I do to fix it? If that’s not possible, does anyone have an alternative idea that isn’t making the image labels ImageButtons themselves and listening to their events?