I suspect that this is due to a recent change in GrapheneOS which shows a crash the first time to happens.
In AOSP, the first crash is supressed (not shown to the user) and is only visisble if it happens a second time.
You can find the change here:
https://grapheneos.org/releases#2023103000
show crash dialog for first crash of an app since boot instead of waiting until the second crash like upstream Android
It seems to me that this is unearthing app crashes that the app developers are unaware of or have ignored due to them not happening multiple times in a sequence, and therefore not appearing in other Android OSes.