Hello,
I've updated the Foundation theme for Moodle 3.7, 3.7.0.3: moodle.org/plugins/pluginversion.php?id=19954 containing:
1. Fix no popup layout #4.
2. Only show a navbar if there are items in it, e.g. empty on the base layout.
3. Fix user menu on mobile #3.
4. Fix assign grader #5.
5. Fix dashboard overflow.
6. Fix my-index page background.
7. Swatch fixes.
All being well I'll back-port to M3.6 in the future.
Gareth