When producing a design (create ship), having all the needed parts I get a strange design flaw. From the image you'll see some factional blocks are loaded as way over 100%. The ship does not appear to complete building but is stuck in production. Unloading recovers blocks.
Here is the design/ship I was using.
Seems to be the same % on the same blocks. Tried other shipyard with identical results. Might be my home server but other designs have worked.