Minecraft Sever is constantly deleting itself

So when I just randomly click on Multiplayer; all my servers are gone! I had this issue before, and there was this issue about servers.dat and how it changed to tmp or something like that and you had to delete it. I do not have that. It has happened yesterday and today. Please help!

This does not occur with 1.9. I use 1.8.9 but it does not let me put 1.8 for the affected versions.