Trees suddenly disappearing

I usually have a few large spruce trees there, purely for wood, but they keep disappearing some time after they’re grown, leaving only a few logs behind. Two oak trees in the background have been stripped from leaves too. That didn’t happen the last two times, only the third time. I’m not sure if all four were grown this time, but at least two of them were. When I checked on them ten minutes later, this is what remained. This happend to me three times the last two days. Does anyone have any idea, what could possibly cause this?

It’s might not an issue with paper, or at least I guess it’s not, but I don’t know where else to put it. I do run a few plugins, namely:

WorldEdit
WorldGuard
WorldBorder
Dynmap
Harbor
DropHeads
DeathMessagesPrime

They shouldn’t cause this… but then, what would?

https://minecraft.fandom.com/wiki/Thunderstorm :thinking:
afbeelding