When I sometimes leave a server or refresh the server list too often, my server list always resets, making me lose all server IPs. Though when making a backup of servers.dat and put that back in then, it always works again. Though it is still annoying.
Environment
Windows 8, 64bit, using new launcher without Java installed
Duplicate of MC-39583. If you have a reliable way to reproduce the issue, please explain it on MC-39583.