While I was looking for Ion storms to play with (doing a lot of sector jumps). When I activated the jump to C-12 the loading screen appeared and the progress bar did not move.

Starting sector Jalik E-11
Ending sector Jalik C-12

I was still able to chat and my ping was normal at about 50ms.

I also had not changed any settings with MTU discovering in the options menu.

In order to fix it all I had to do was hit esc, logout, and then back in. When I log back in I am still in E-11 with my navroute still in tact.

If anyone else encounters this bug I was told to report it (like this I guess) and see if they can figure out the cause.

..hmm, I've seen this in wormhole sectors sometimes;

I think it happens when your destination sector has crashed and needs to be restarted