My Scene bpy.types.Panel appears on all tabs I created a simple bpy.types.Panel to allow modification of custom scene properties, wanting it to appear only on the Scene property tab, and thus created it like this:

class MK8PanelSceneCourse(bpy.types.Panel):
    bl_label = "Mario Kart 8 Course"
    bl_idname = "SCENE_PT_mk8course"
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"


This works fine, and the panel appears on the scene property tab as expected:



However, I noticed it also appears on every other tab. Here's an example with the World tab, where it's even the World name textbox:



How can I make it appear only on the scene tab?
It looks like I forgot to set up the bl_context member of my panel. Sadly, the documentation is not very clear about the possible values (it would be great it if someone could list them and link it in a comment).

For the scene tab, the panel code would be:

class MK8PanelSceneCourse(bpy.types.Panel):
    bl_label = "Mario Kart 8 Course"
    bl_idname = "SCENE_PT_mk8course"
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    bl_context = "scene"