Persistent graphical artifacts can be resolved by deleting the options.ini file located in your Documents/My Games/Binding of Isaac Repentance folder. The game will generate a fresh, clean file upon the next launch.
When developers push updates, they often fix old problems but create new ones. Version 1.7.9b, released quietly in late 2021 (following the major 4.0.0 Repentance launch), sits in a sweet spot. It comes the critical bug fixes of 1.7.8 but before some controversial balance tweaks introduced later. the binding of isaac repentance 1.7.9b download
As for version 1.7.9b, it appears to be a specific patch or update for the game. However, I couldn't find any concrete information on what changes or features this particular version entails. Persistent graphical artifacts can be resolved by deleting