I clicked on the Intelligence map overlay. When I clicked out, I found myself in a shadow land. Districts appeared only as grey spots. Units disappeared. The land lacked detail.

The diagnostics file contains numerous red calls like this:

Unable to alloc enough pixel to store particle visual data for layer [EQ_DLC01_ShirtStandard_02_A_OutputLayer]. Please increase render texture size. available [0], needed

Available system and graphics ram are both well in excess of recommended amounts for this game. Thus this is not a memory availability issue.

The save file does not appear corrupted as reloading solved the issue.

The bug report system forced me to select an incorrect Game Version. Correct version: v1.0.26.4449 George Sand Update Patch 1.

System:
MacOS 12.7.2
Intel CPU
AMD Graphics

Epic Games Version
Humankind 1.0.26.4449

No Mods