It seems that I get this Java error quite often when editing a node's properties in NPM:

It is incredibly frustrating and will send me into a rage every time I get it because it happens every time I spend more than 10 seconds on the page or I update a ton of custom properties all at once, forcing me to reload and do it all over again. I've tried different browsers and different computers. My colleagues say they do not experience this problem at all. How can I figure out what is causing this before I go completely mad? Could it be related to some common plugin or extension that I have on all my browsers?