Roll20 map percentage scale pull-down problem

This is a glitch in the latest version of Firefox. When I use the pull-down and try to select a new map percentage scale, the menu disappears. I have checked, and this is not a problem in Chrome. I do not know if this is a Roll20 issue or a Firefox one, but since it doesn't happen in Chrome, I'm leaning towards Firefox problem. 

Thanks for the heads up. Before we escalate this can you do the following, please. This is mostly just to cover the bases. Could you please carefully work through the first three steps of our guide to Solving Technical Issues ? Step 1: Make sure to use the right browser Please check if these issues persist when using both Chrome and Firefox . Done Step 2: Ensure that there are no extensions/addons interfering with Roll20 Please disable all add-ons/extensions and anti-virus programs.  Do both browsers have the same add-ons/extensions? Step 3: Clear your cache If none of the above succeeds, please thoroughly work through Step 4 . (Don't forget the complete Console Log!) Thank you!

This is actually a bug that the Dev Team is aware of . For now, here are some workarounds: While hovering over the Zoom tool's icon, use arrow keys to navigate the context menu. Alternatively, use the Zoom Slider in the upper right hand corner of the tabletop. Alternatively, use the Keyboard Shortcut Alt+Mouse Wheel to zoom.

Thanks for the info Silvyre.