Bugs:
#1 if you spam the "add a new source" button you eventually get a JavaScript exception logged to the screen due to an array with a fixed max size of 128 elements overflowing.
#2 this could be graphics card or driver specific (I have an AMD card), but scrolling just right can can break the simulation due the the text boxes; for example by quickly paging up and down, or scrolling all the way to the bottom and then wiggling the scroll position up and down. Once this happens the bad data propagates until the entire thing is filled with noise, solid black, or solid white. If you then scroll up to 3D mode the screen will be filled with a mess of polygons.
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