My server listings will delete themselves randomly from time to time. They will usually commit suicide when I refresh them too much (Most of the time due to a certain server on the list not connecting.) or sometimes, I'll start Minecraft up and they'll all be gone, but that's rare. They will delete themselves almost weekly, now. (They go away after fewer refreshes if I play for a longer time.) I also tested it a few times.

What I expected to happen was...:
I expected for the servers to immediately delete once I started to refresh them repeatedly. (I had three servers in the list)

What actually happened was...:
They did delete but only after a huge amount of refreshes and I went onto one of the servers for a second, as well. (During this test, I hadn't had Minecraft up for long)

Steps to Reproduce:
1. ... Open Minecraft and go into your server list.
2. ... Refresh your listings repeatedly until they vanish.
3. ... If that doesn't work, try joining a server then doing step 2. Or if that doesn't work still, Try doing step 1 along with 2 again.