Slitherine

We need some way of temporarily removing the UI panel.
This Sturmpanzer is unable to fire at the Greek cavalry partially hidden.

Zoom out?

Zoom in works for me.

Tried both zooming in and out, but could not attack.

There's a cheat code:

#videomode on/off
Hides/reveals bottom control panel.

Although, as a suggestion, there should be a button to do this on the panel itself. When the control panel is hidden, there could still be a tab sticking up on the bottom of the screen to restore it.