Using Forestry 1.12.2-5.8.2.414, I cannot get trees to breed.


I'm trying to breed silver lime + apple oak / silver birch, and teak + dark oak, and there's plenty of butterflies around and I also have bees around. Has been running chunkloaded on a server for a week yet no results.
I have checked and butterfly pollination is enabled in the configs.
Any idea what's wrong?
Thanks!

After putting more bees around some of the trees I managed to get some leaves to pollinate.
Unfortunately the trees that had no bees around - did not get any leaves pollinated.
I now added bees around them too and they got pollinated, which leads me to think that butterflies don't properly pollinate trees (duplicate of #2435)