Unable to seat Eaton CH breakers side-by-side in my Eaton CH panel

This is probably an embarrassing newbie mistake, but I’ve really been scratching my head over this. I have an Eaton subpanel that states it accepts Eaton type CH, CHT, or CH3 branch breakers. However, when I try to seat two CH breakers side by side, the breaker on one side unseats the breaker on the other. They don’t both seem to fit. I’ve temporarily gotten around this by installing breakers only on one side of the panel, but I would love to know what the problem is and also make sure I am using compatible breakers.

I’m having the issue with regular Eaton CH breakers and also Eaton CH AFCI/GFCI combination breakers (not the plug-on-neutral kind).

Here are images of the subpanel label, inside the subpanel, and also a gif of me trying to seat the breakers side by side:

Thanks in advance for any help!