This has been mentioned in Option to never see "Show more properties" button , but it was closed, but I think its still relevant.

In my case I’m seeing the "show more properties regardless of whether a component has “simplify all instances” enabled.

Basically every time I select a text layer and I havent in a while, UI3 assumes that I don’t want to edit the actual text properties. Once I expand the properties once, it keeps that setting in memory for a few minutes, and then forgets that I use text styles.

I’d like to always want to show these properties.