Matek_h743-slim bugs

Hi Team,
Kinda new to PX4, playing with tech I want to port to as well as looking for small board solutions.

I have a few Matek H7 FC’s, a few of the Matek H743 Slims which I have been testing with.
From the main branch build, there is a bug where you cannot select certain vehicle types (in this case a quadcopter) which then blocks progression to continue setup.
Selecting quadcopter fails to save but a Y6 config saves, I have compiled myself on the same branch and also on the stable branch. Both Branch’s have this issue.

Can make a bug report though would also try to understand and work this myself, being a curious old avionics dev.
What would break selecting certain platform types?

I think the bug is only in specific branches. I ran into this on my H743-Slim too, but moving up to 1.15 solved the issue.