deleted ProjectorModeCheckbox above. The only weird thing is that diffusion still creates a GasProperties preferences Node even though it has no content for it. Since it is in a suite. I thought that was better, in case a new option is added to that sime that should apply to all three sims (gas-properties, diffusion, and gases-intro).
This should be addressed. Diffusion should not create content for the Preferences General tab.
After Options where folded into Preferences for https://github.com/phetsims/joist/issues/837 ...
@zepumph reported in https://github.com/phetsims/joist/issues/837#issuecomment-1224271134:
This should be addressed. Diffusion should not create content for the Preferences General tab.