From my observations vines don't grow back and only non player grow trees have them so those are a finite resource. I hope the devs will fix this in the future. In the meanwhile harvest them from trees you are about to cut is not a bad idea.
While it would be great if the devs 'fix' this in the future, I can see why they would leave it as it is, because cattails can be used and they are a renewable resource. They seem to also be balancing this by requiring twice as many cattails as vines.
From my observations vines don't grow back and only non player grow trees have them so those are a finite resource.
I hope the devs will fix this in the future.
In the meanwhile harvest them from trees you are about to cut is not a bad idea.
While it would be great if the devs 'fix' this in the future, I can see why they would leave it as it is, because cattails can be used and they are a renewable resource. They seem to also be balancing this by requiring twice as many cattails as vines.