Can't See Material Preview in Sculpt Mode

Support Modeling
1

When I’m in object mode, my material preview looks like this:
PTBase

But when I switch to sculpt mode to add mountain ranges, it looks like this instead:

PTSculpt
PTSculpt1916×1012 353 KB

I need to be able to see the continents as a reference point when sculpting, so this is a significant problem. So how do I go about fixing this?

2

Seems it’s the Multiresolution modifier that’s causing the image texture to get hidden. But why?