Camera movement bug with arrows

When you move the camera across the map with the keyboard arrows, a problem sometimes occurs that when releasing the arrow keys the camera won't stop moving.

Repro steps:

- Start the game
- Press for example the right arrow key on your keyboard. -> The camera moves to the right.
- Release the right arrow key. -> The camera keeps on moving right.

Now when you press the left arrow key the camera will scroll to the left. When you release the left key the camera won't stop aswell.

I get the same problem - but its occurance is random so unable to reproduce effect

My workaround is to reload the page, but a bug is a bug

It normally happens after you've had a visitor