Duplicated blocks not rendering consistently

Morning! I've created a Generateblock consisting of 750px Container inside a container, with a 2-column grid which showcases an image on the left, and Heading + Description on the right.

When I duplicate this block, it drops the right side (Heading + Description) of the grid below the left side, almost as if there is a responsive issue:
https://www.hammeracademy.co.za/test

This is unexpected behaviour, and I'm baffled.

Troubleshooting steps:
* Manually recreated the blocks
* Checked GP elements which specify maximum page width to 800px.
* Switched between External File and Inline Embedding (no difference)
* Disabled LiteSpeed caching
* Switched between SVG and WebP images
* Switched from Float to Flex
* Tested on multiple browsers (Chrome, Edge, Opera, Safari)

I don't know if this is a GenerateBlocks, or GeneratePress issue.