Technical Issue with Shogun-Type Battles

Hello, first post!

I'm playing Pahlava on H/VH and down to 215 B.C.E. I've gotten 90% of Arche Seleukia, most of Baktria, and the Levant.

I take Chach from the Baktrians and send some armoured HA down to Alexandropolis to reinforce the garrison against seige. Attacking a mercenary army led by a FM, I am quite puzzled to see that the interface has reverted to something that looks like Shogun and Medieval I.

I haven't figured out how to fix it with search engines and documentation. Any ideas?

Are you referring to the controls and interface or the actually battle and the units on the battlefield. If you are referring to the UI, you might have enabled minimal UI in the configuration. Or you may have switched units to lowest detail so it just shows sprites.

Can you post a screenshot of it here?