Filters not working on mobile view

[envycontent]

A comment from one of our users:

This is a Samsung Galaxy A5 running Android 7.0.

However it occurs I think on any device with a screen size small enough
such that the filters window is only visible after you click the filters
button. As soon as you click in one of the fields on the filters form e.g.
series the filters window will close. So you can actually replicate this on
a normal desktop web browser by making the size of the browser window small.

I just had the same experience in Chrome on my desktop with a small window
size.