We added some custom reasons for off-topic and it removed the default one. So as a workaround, we've had to manually add the default reason. How can we get our default off-topic close reason back? This way, we would then be able to add a 3rd off-topic reason.
By adding it as custom reason.
The way to get the reason back, while preserving the custom reason, is to add the default reason (or something resembling it) as another custom reason too.