#I'm not sure whether plants that do this still have the same vigor/production potential they would've otherwise

[pumpkin-patch]

On the subject of stem breaks I wanted to show this. While transverse breaks can be fatal, longitudinal stem splits are not necessarily a handicap. I've even had them split in two and still bear fruit.

Leggy seedlings seem prone to doing this (with there being a greater length of stem exposed between the soil line and the first node) although how these particular seedlings have any business being leggy with the blast furnace level sun they're getting, I'm not sure.

I'll mound up some soil to encourage more rooting but I'm honestly not even sure that's necessary.