This bug is exclusive to the NWJS 0.72.0 version of the game.

This bug did what in the C:\Users\<YouUserNameHere>\AppData\Local\Temp folder

You keep creating a bunch of residual files every time you open the game.

Now the game closes and deletes these residual files.

This only happened in NWJS 0.72.0 in the standard version it did not happen.

I would advise you to go to this folder C:\Users\<YouUserNameHere>\AppData\Local\Temp
And delete any folder that starts with nw, but with the game closed.