Reproduction steps:

1. Open user attached project
2. Select Art/Blue and expand the "Advanced" foldout
3. Additionally select Art/Green
4. Select Select Art/Blue again.
Notice that the Advanced foldout collapses.

Alternatively - see user attached video.

Expected result: Advanced foldout state remains the same
Actual result: Advanced foldout state is not persistent after selecting another texture.

This issue makes comparing or going through advanced textures settings difficult.

Reproduced on: 5.4.0b2