Tap outside of filter space to leave to go to Viewer

[erinwagner]

Android 8.1.0
Chrome 76.0.3809.132

When in the filter window for the Viewer, it would be nice to be able to click outside of the filter space to go back to get rid of the filter window and go back to the Viewer, instead of going up the x to close it. I instinctively do that on my phone, but then have to scroll all the up to close the window to see the spectrum.