Hey, First of all I would like to thank the Roll20 Team and its Community for keeping up this great platform for roleplaying and that it is compatible on pretty much every browser. I would like to report that Mozilla Firefox is not as compatible as its Chromium-based counterparts, for example when you try to select the zoom tool on your left pane, on moving from it to select one of the numerical percentages they suddenly disappear, thus only the slider will allow a Mozilla Firefox user to zoom/unzoom the map. Perhaps other Firefox incompatibilities could lurk beneath, however I have only spotted this one so far.