I recently changed corporations. I forget about some jobs running using old corporation hangars which resulted in locking few of my industry slots while in new corporation without any way to see where mentioned slots are used. There is nothing in industry queue, you cant see “used by corporation” queue. Also nothing displaying in third party apps using ESI.
Without help from GM there is no way to find this type of “locked” jobs if you forget to deliver them before changing corporation or someone with appropriate roles there will do it for you.
I think this is something that requires taking a look into.
Screenshot to better show problem: