Currently, there are two known bugs in JSDSH:

=== "Gravity" ===

==== Reproduce ====

This bug is present at least in firefox and chrome(ium)

Open JSDSH, then open a new tab. Close this tab, usually you will fall back into JSDSH. Click on any player
or creature. This will cause this creature to "fall down" (that's where the name comes from), this means that
it thinks there's a permanent key event from arrow-down.

==== Reason ====

The reason hasn't been tracked down, but is likely to be an error in Crafty.js itself.

==== Countermeasures ====

If this happens, DON'T CLICK ANOTHER OBJECT! Open the JS-console and trigger the function reset_bug() manually.
If you accidentily clicked ONE other object, it is still possible to get back to the old state:
Manually reset_bug(), de- and refocus the window, and trigger reset_bug() once more.