Description: In the turn before the grand pyramid is finished, after I click the next turn, the turn hangs on forever. I tried to reload the previous turn and use the labor to complete in the turn instead of completing it automatically, the grand projects disappeared in the queue but were not marked as completed. This bug also happens when a religious shared project is built. 

attachments: two saves which both hang on forever if you click next turn. 

Trigger it again: build a shared project and wait until it finishes

Expected behavior: the grand project is finished normally. 

auto-save 4152.ctr