Animated drop-down menu using div blocks and interactions is not working on mobile portrait only

I created a pull down menu using div blocks and an interaction to set the height from 0px to Auto. For some reason “Auto” isn’t working for Mobile Portrait. Every other break point works.

I am using flex layout and the only diff (that I can tell) between the breakpoints is that mobile portrait uses 3 rows and the others use 3 cols.

Here’s a video: webflow - YouTube

Here is my site Read-Only: [LINK][1]