What I expected to happen was...:
I can connect the server and play happily.

What actually happened was...:
When I connect the server,the Minecraft closed and the launcher is opened itself.

Steps to Reproduce:
1. I opened the launcher and logged in to the minecraft.
2. I tried to connect the server and when I opened it, it closed and the launcher is opened itself.
3. I tried to connect another server, and it is the same happened.
4. Then I tried to change to "release 1.8.9", it is nothing happened.