Zooming on browse sites page causes map to undock from panel

[HeatherBrooks]

When I check the Leaf Pack box under Data Types, the map layer disappears completely. The map layer appears when neither data type is selected, and when EnviroDIY only is selected, but checking the Leaf Pack box either alone or with the EnviroDIY box checked causes the map to disappear. I'm seeing this issue in Firefox and Chrome, logged in and logged out.

[HeatherBrooks]

I discovered the map layer also disappears if I search for a site. I just spoke with @ScottEnsign and he said he encountered the same issue yesterday when he selected Trout Unlimited under Organizations. But he noted that the map layer is still there, you just have to scroll down to find it.