ePBT Northern Wobble?

I haven’t noticed this before but I noticed something odd while using my PCB-mounted Polaris board with ePBT 2048 and Gateron Inks: some of the keys were tipping over when I press at the northern edge of the keycap with a little more force than usual. I’ve verified that keycaps are not cracked, at least not visibily.

I thought it was due to switch wobble but, without the EPBT keycap, Gateron Black Ink switches did not wobble like that. I tested my other keyboards and found that ePBT 9009 also had the same problem while CRP keyset did not.

I’m not sure why this is happening but it’d be nice to know if it’s just me noticing this or not.