When comparing Eternity and UDMF maps, I've discovered a long-standing mistake in the Eternity implementation of the Scroll_Floor, Scroll_Ceiling and Scroll_Texture_Model. The second arg's bits for choosing between displacement and accelerative scrolling were swapped wrongly in Eternity! This caused confusion for users and incompatibility between ports (when trying UDMF with ee_compat = true) and it was completely unintentional! So I've fixed the bits now to conform to the ZDoom definition. Appa