I just wanted to let everyone know that Jack has been made aware that there might be an issue with the design updates not releasing and it will be looked into.
I am guessing that everyone is aware of this already, but just to make sure: You can only update a given component once every other day regardless of the number of designers you assign to that component. For that reason, I recommend that when you start a season you assign designers to the first 4 components (Chassis, Sidepods, Front Wing, and Rear Wing) and then the following day moving them to the remaining 3 components (Suspension, Underbody, and Internals). That way you are keeping the design updates at a fairly consistent pace and you aren't wasting staff who aren't working on design updates (unless you are moving staff from one department to another from day to day anyway).
As I said at the beginning though, the design update process will be examined to make sure there isn't a bug keeping peoples updates from going through.