In IR deconstructing/chopping a tree results in 4x wood and 10% chance for sapling.
So when I select 50 trees for deconstruction, I am expecting 200x wood and ~20x saplings.

Using the drones, I got 200x wood and 50x saplings.

Same game but now by hand chopping 50 trees, i get 200x wood and 1x sapling.

Mod packs in use: Industrial Revolution, Alien Biomes, Construction Drones and QoL mods.

I did a recipe dump and verified that all trees have the following probabilities:

data.raw.tree["tree-01"].minable.mining_particle = "wooden-particle"
data.raw.tree["tree-01"].minable.mining_time = 0.55
data.raw.tree["tree-01"].minable.results[1].type = "item"
data.raw.tree["tree-01"].minable.results[1].name = "wood"
data.raw.tree["tree-01"].minable.results[1].amount = 4
data.raw.tree["tree-01"].minable.results[2].type = "item"
data.raw.tree["tree-01"].minable.results[2].name = "wood-sapling"
data.raw.tree["tree-01"].minable.results[2].amount = 1
data.raw.tree["tree-01"].minable.results[2].probability = 0.1 <---