Map disappears from content browser

I created a new level, saved it, and began adding blueprints and everything like normal. Then I saved it, went to load another level and it disappeared from my content browser. It is still visible in the project folder in explorer, and the reference still works in the actual game. It loads fine and everything.

But since I can’t access it through the browser, I can’t make any modifications to it. I’ve read through threads of people having similar issues, but the problem never seems to get resolved.

Am I doing something incorrect, or is this a bug of some sort? It’s holding my project up because I’ve already created the map twice and it keeps happening.

hi
It happened to me right now for the third time.

I think this is an old bug.

4.13.0. win 10