Seed number and World name are missing after crashes

I've crashed a lot. Not mad, the game isn't perfect and no game ever will be because that's how life works. But one of the problems I've had is that whatever I name a world will be erased and the name will be left blank along with the seed changing to "0". I can still log in and everything is mostly fine, but I would just like to know what seed I'm using so that I can reuse it later if I don't like the world with the seed. The world shown used to be called "Creative ideas" but as you can see the name for it is blank. Not asking for a personal fix, just reporting what I found.