Select text in non-nested ShadowDOM and remove an element containing shadow host.
Then the anchor node of the selection should become be the parent element of the removed element (container).
PASS window.getSelection().anchorNode is container

Select text in nested ShadowDOM and remove an element containing shadow host.
In this case, the anchor node of the selection should also become be the parent element of the removed element (container).
PASS window.getSelection().anchorNode is container

PASS successfullyParsed is true

TEST COMPLETE