Could not load in my friends server

So there is a bug that is really annoying. So basically what happened, I was playing with my friends on a normal server, not Realm. At some point, I decided to exit Minecraft without completely closing it. I smoothly remember what exactly happened next, either my Minecraft crashes, or everything was fine, except I can't join my friends server that are no Realm. What happens is, when I'm trying to load to any my friends server, I'm being stuck in loading screen. Its been few monts by now, and I still can't join any of my friends server.