AutoButtonColor initially does not work for Gui button objects with the new UI Corner while typing in TextBox

After parenting a UICorner object to a Gui button object (e.g ImageButton, TextButton) , while typing in a TextBox, hovering your cursor over the button object does not trigger the AutoButtonColor of the button’s properties.
This for some reason happens in certain cases (such as with how the UI Corner is parented etc. place file below demonstrates it occurring).

The bug occurs in Studio and in Play mode as well.

This video demonstrates:


As you can see, only after I clicked outside of the Text box, the AutoButton effect came back.

The date this started occurring is not known, but supposedly after UI Corners were introduced.

To Reproduce:

In Studio, create a TextButton object and parent a UICorner to it:
place file:
test.rbxl (26.3 KB)

Thanks for your report! This might not relate to the new component introduced as I removed all the UICorner instances the issue still presents. It might due to the fact that we sink input when there is a textbox focused. We will fire a ticket for this but it might be the way system behaves as always.

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