Civilization VI September 2020 Update

The September 2020 Update for Civilization VI was released on September 24th, 2020. The update was released simultaneously with the Byzantium & Gaul Pack. The following is a complete list of change notes.
==Gameplay/Balance==
*Georgia's abilities are now the same in Gathering Storm and Rise and Fall.
*Resources will now be removed when building Canal connections.
*Entering the in-game options menu now cancels the ranged attack arrow.
*+1 to Pastures bonus moved from Exploration civic to Stirrups tech.
*City-State placement has been updated to make invalid positioning less likely to occur.
*Fixed an issue allowing players to build a Secret Society unique buildings and also the equivalent replacement buildings.
*Fixed an issue with the Work Ethic Follower Belief where bonuses to districts were not being re-applied after a pillaged district was repaired.
*Grabbing a Tribal Village by owning the tile it occupies grants Era Score.
*Barbarians now move to valid tiles when converted in closed-border territory instead of disappearing.
==UI==
*Alliance type is now displayed in the tooltip when the Agreements category is minimized.
*Government menu's list of filters will now scroll when text overlaps the screen.
*Button styles in multi-select window have been unified.
*Unique units and infrastructure on Civilopedia leader pages are now presented more consistently.
*Fixed an issue where quantities for items were not updating after being edited when proposing demands or deals to a human player in the Diplomacy menus.
==AI==
*Trade AI improvements:
**For immediate trades, AI will not trade per turn if the value of the trade is less than 1 per turn. AI will accept that as a gift, not offering anything in return.
**Allow AI to trade more than one copy of a luxury resource at a time.
**AI will only trade their last copy of a luxury resource if they are in an emergency situation.
*Improved AI's desire for and building districts.
*Additional AI improvements
==Misc==
*Antioch City-State replaced with the Venice City-State.
*Fixed an issue that was causing map selection to break.
*Map visual update now occurs after a player has stopped panning the map to make hitching less likely.
*Fixed an issue where the "Are You Sure" prompt was not appearing when attempting to exit the game while on the Player Turn prompt during a hotseat game.
*Fixed an issue where the game could not be force closed except by the Exit to Desktop button when a player had been defeated during a multiplayer hotseat game.
*Additional text updates.
==Crash fixes==
*Fixed a crash that would occur when a Builder cleared a Vampire Castle.
*Fixed a crash that would occur when defeating units with a Giant Death Robot.
*Fixed a crash that would occur when slotting policy cards.
*Additional crash fixes.