1. Bug summary / Thread Title

Turn 87 Does Not Process, Cannot Queue Techs or Move Units

2. Bug description 

Playing as the Umayyads with Science Mode enabled on two Cities. The turn the Science Mode is able to be deactivated will not process. I have loaded the save multiple times and tried different things and it still will not process. 

3. Steps to reproduce

 Load the save game and try to play it. 

4. Reproducibility

5/5 - Happened every time I tried to load the save game. 

5. Expected behavior

The expected behavior was that the game would process the turn and continue. Unless the Opendev only goes to turn 87? 

6. Notes

I noticed one of the times I loaded the save on turn 85, it gave me the option to claim a Wonder. It did not happen on this save, even though the saves are for the exact same turn. I did not see any output_log file. The only three files were player.log, player-browser.log, and player-prev.log

7. Attachments /!\

auto-save 107.ctrauto-save 108.ctrauto-save 109.ctrauto-save 110.ctrauto-save 111.ctr

auto-save 112.ctrauto-save 113.ctrauto-save 114.ctrauto-save 115.ctrauto-save 116.ctr

Diagnostics (2021'04'25 @1337'47''190''').html