Privacy Browser PC 0.6.1 was released on 21 August 2024 to fix a couple of bugs with the new features in 0.6. On devices with small screens (or large fonts) the domain settings dialog now has so many entries it could be pushed off the bottom of the screen. The fix was to encase the domain settings display in a QScrollArea.
When implementing filter lists, a logic error was accidentally included that bypassed the application of domain settings if the main URL was explicitly allowed by one of the lists. This affected a number of websites, including GitHub (which is what tipped me off).