Video Popup doesn't close when the search field changes

[asashour]

Steps to reproduce:

1. Open https://mediathekviewweb.de
2. Ensure the cursor is in "Suche" field (it has focus)
3. Hover over the Video icon of any movie, the Popup is shown as expected
4. Type any key (e.g. 'a')
5. The Popup remains forever, even though the relevant video is not shown anymore.

[bagbag]

Most likely I won't fix this. That problem will disappear with MVW 2.0