Item of a grid not showing on iOS-Devices

Hi
I use a Grid to display some photos with a hover-effect.
When I open the site with an iOS-Device (iPad Pro Softwareversion 13.5.1, and iPhone 8, Softwareversion 12.3.2) then the first element (it is an area of two grid-items) does not show.

Here is the read only link:
Removed shared Link.

I guess it is not a CSS-compatiblity-issue because CSS-grids are supported by current iOS-Devices.

Any idea what I do wrong?

Edit:
Solved it by NOT using a grid:-)

Kind regards
Alain

I also had a problem with a grid on iOS and found out it had to do with: Grid > Distribute.
I changed this to: Grid > Distribute > Content Start and now it is displayed properly.

Maybe you can do something with it.