changes to -addTypes in a stack update do not affect existing instances when -addInit is present
Start the stack's HTML like this... It simply is the same as scenario 1 but with
%slice -addTypes="text" -addInit=0%
Add the stack to a new project file. The child stack will add a Text stack as a child.
Now update the stack HTML to be this...
%slice -addTypes="text,html,markdown" -addInit=0%
If you go back to the same project that you created. If you click on the child stack button, you would expect to see 3 options. You do not see 3 options though. You still only get the Text stack being added. However, if you add a new instance of the stack to the page, the new instance of the stack behaves as you would expect.