Why does login fail after being idle at the main screen for a while?

[Shinobi]

As the title says, why does login fail after being idle at the main login screen for a while? Why are we forced to restart the game?

 

[Gnidex]

Because SV is incapable of coding it right the first time.

 

[Bigbadwolff]

i have this issue since the last update