Doesn't seem to work in Chromium 62 or Chrome 63. Occasionally the browser says "Rats! WebGL hit a snag. [Ignore] [Reload]", and neither action helps. Occasiona

Doesn't seem to work in Chromium 62 or Chrome 63. Occasionally the browser says "Rats! WebGL hit a snag. [Ignore] [Reload]", and neither action helps. Occasionally WebGL doesn't hit a snag, but the visualization only loads partly, with some buildings, sometimes with color but sometimes not, and just overall appears broken.