The HUD sprites of the Mage's second weapon in Hexen are erroneously shifted upwards when the scale of the status bar is greater than 1. I couldn't find any other weapons in stock IWADs that are also affected. In this particular example, the scale is set to 2:

Tested in GZDoom g4.3pre-532-g318da33e3, 4.2.4, and several older versions. It appears that this bug has existed since the introduction of the status bar scale slider.