Parallax image resize bug

[i-k-o]

Responsive image resizing is broken on parallax.
If you maximize browser window and then move vertical scrollbar down, it breaks how image is rendered. If you return to original window size, the image won't resize properly (lose "cover" property). It can be tested on example page:
https://materializecss.com/parallax-demo.html

[pwcreative]

This does seem to be an issue. Parallax doesn't respond to screen resize very well.

[Durkee]

I thought with Material Design you start with mobile first.