Hi, when I processed olive saplings, dwarves picked up random plants, processed them and produced olive wood and olive seeds from them. I believe they picked closest plant. They are currently processing a stack of spelt.

They did produce more olive wood and seeds from the said slept.

I have all mods in your modpack.

That's a bug in vanilla DF that Putnam has fixed for the next DF version. From what I remember, it affects most plant processing jobs.

Wait, no, somehow I missed adding the mod prefix to those sapling structural materials. Thanks for catching that! There is a very similar bug in vanilla right now that causes the same behavior and I thought it was affecting reaction material searching as well.

In the newest version of DF some saplings will grow as bushes with (what I believe) is the vanilla bush graphic. These bush saplings can be harvested with the normal plant gathering designation and will give saplings on collection that can be processed for seeds and logs like usual. On my current embark I have normal cedar saplings growing, but I also have these cedar "bushes" growing. I've only seen this happen with vanilla tree types. I assume this isn't intended behavior, especially with how common these "bushes" are.

That is a bug specifically with cedar and pine, I've uploaded a fix for it. Thanks for the report!