Popup window "Before download" isn`t displayed on the map tab.

Steps:

1. Go to "https://sandbox.genesys-pgr.org/a/map/v2ZWXDJ7Ddd/@7.013668,4.921875,3z".
2. Click "Download KML" button.

Expected result: Popup window "Before download" should be display

Actual result: Downloading starts without popup window.