Flags not showing up in Library grid

Hello!

I have an issue that seems like it was something so dumb, like pressing a key by accident, and now I don't know what's happened.

My flags aren't showing up on the photos in the Library grid - but they are showing up in the bottom thumbnails. Minor inconvenience, but I normally look for my flags in the library instead of the thumbnails, so it's just throwing me off.

I've heard of issues of the flags not showing up in the bottom - and a quick solution is just to drag the bar up and down (to re-size the thumbnails) and fix it. I've tried this quickly and it didn't work for this particular problem.

Any ideas would be greatly appreciated!