We released a series of improvements for Lua debugger:
Better handling and displaying of values with circular references. Previously such values could hang editor or engine on breakpoints. Now we make sure to handle it gracefully, and allow to infinitely drill down to such values in Variables panel:
It feels mature enough to use it now. One thing I’d add is some history for the “evaluate lua” box. I’m used to the Chrome Dev Tools where I can type an expression, press enter to view it, then press up arrow to continue editing it.