Update:

That workaround didn't actually fix the issue, it just moved it onto a different material type:
I'll keep playing with it and submit a bug report. I'll post back if I find anything.

I'm having the same issue. I think it's likely a bug but not sure, I've found a workaround though.

Issue:

Last stack of space platform logistic request will not get filled; the request stays highlighted yellow as if the units are being requested but nothing arrives. On the planet, all rockets are ...