Should front driveshaft spin in 2wd?

[Toro]

After some interior work, I drove around the neighborhood today without the transmission hump installed and noticed the front driveshaft was spinning. It was in 2wd, hubs "unlocked". Factory setup 350/TH350/NP205/Dana 44. I'm guessing there shouldn't be power from transfer case in 2wd on front shaft, and maybe it just spins from going down the road?? Either way, I just noticed and wanted to be sure. Thanks.