This seems like it is an unwanted behavior.
What happens:
inserters pick up items marked for deconstruction.
What should happen:
Inserters shouldn't pick up items marked for deconstruction.
Other relevant things:
Belts already do NOT pick up items marked for deconstruction that sit on top of them.
https://youtu.be/qFlfcQGQwSU
[Genhis] [1.1.38] Inserters pick up deconstructed items on ground
Re: [Genhis] [1.1.38] Inserters pick up deconstructed items on ground
Thanks for the report. It's now fixed for the next release.