When clicking on multiplayer, my list of servers gets cleared and every server I play on is gone. I then have to re-add them manually. This also happens when I log off of a server to play on a different one.

When logging off of a server to play on a different one, I expected all my servers to be there so I could choose which one I wanted to play on.
I also expect all the servers I play on to be on my list when clicking multiplayer after starting up Minecraft.

When logging off off of a server to play on a different one, the server list takes a little longer to load, and when it finishes, all of my servers are gone.
Also, when starting up Minecraft to play some multiplayer, my servers are randomly cleared.

Steps to Reproduce:
(These steps may not trigger the bug because it only happens randomly for me.)
1. Play on a server for a little while
2. Log off of the server
3. Go to choose a new server to play on

Other Steps to Reproduce:
1. Open Minecraft
2. Click on multiplayer

All servers should be cleared but like I said, it only happens every once and a while. Although this bug doesn't appear that often, it still annoys me and I can't find a fix to it.