Sidebar Highlight State Issue for Catalyst Apps with UIDesignRequiresCompatibility Flag

Thanks for flagging this, the engineering team will investigate the issue. Apart from the Developer App, are you able to reproduce the in a test project ?

The issue is still present in 26.1 (25B77).

Still present in 26.2 Beta (25C5031i).

Yup same issue here.

Spent way too much time on this...grr..my workaround:

-(void)updateConfigurationUsingState:(UICellConfigurationState *)state
{
	UIListContentConfiguration *contentConfig = (UIListContentConfiguration*)[self.contentConfiguration updatedConfigurationForState:state];
	if (![contentConfig isKindOfClass:[UIListContentConfiguration class]]) { contentConfig = [[UIListContentConfiguration valueCellConfiguration] updatedConfigurationForState:state]; }
	UIBackgroundConfiguration *backgroundConfig = [[UIBackgroundConfiguration clearConfiguration] updatedConfigurationForState:state];
	
	   UITraitCollection *traitCollection = state.traitCollection;
	
// Focus AND active
        if (traitCollection.activeAppearance == UIUserInterfaceActiveAppearanceActive
            && state.isFocused)
        {
            backgroundConfig.backgroundColor = self.tintColor;
            
            contentConfig.imageProperties.tintColor = UIColor.whiteColor;
            contentConfig.textProperties.color = UIColor.whiteColor;
            contentConfig.secondaryTextProperties.color = UIColor.whiteColor;
        }
else {

 if (state.isSelected || state.isHighlighted || state.isFocused)
            {
             // need an unemphasized selection color.
            backgroundConfig.backgroundColor = [UIColor colorNamed:@"SomeKindOfLightGrayHereMaybe"];
            }
            contentConfig.imageProperties.tintColor = UIColor.darkGrayColor;
            contentConfig.textProperties.color = UIColor.darkGrayColor;
            contentConfig.secondaryTextProperties.color = UIColor.darkGrayColor;
}

	self.backgroundConfiguration = backgroundConfig;
	self.contentConfiguration = contentConfig;
}

These content configuration APIs have always been kind of an overcomplicated disaster IMO. You could try to duplicate the 'source list' selection style like Finder sidebar but I just use the current tintColor. Seems to work in my limited testing. At least I can read the text.

Finally seems to be fixed in 26.2 Beta (25C5048a). 🙏