setSelection is off by one while having a normal header

[gabrielittner]

When I add a normal header to the list and call setSelection the first visible item is the sticky header from the item before.

When I want to move to item 11, I call setSelection(12) (of by one to include the normal header) it looks like:

• Sticky header of item 10
• Sticky header of item 11 and 12
• item 11
• item 12
  ...

It should look like this:

• Sticky header of item 11 and 12
• item 11
• item 12
  ...

[gabrielittner]

Little update: It only happens when moving to an item that shares it's sticky header with at least one other. I have updated the sample above. If item 12 has it's own sticky header setSelection works like it should.