Imagine you die and you need to get your stuff back. Hopefully you have the Universal Graves mod installed, so you follow the compass, and find your grave. When you happily click on the grave, an UI appears, but there is no option to take the items.

That is because when you click on a grave with a compass in your hand, it opens the compass' UI instead of the grave's one, which doesn't make sense at all.

Graves' interaction should have higher priority than compass'!