A subtree invalidation should not invalidation sibling forest

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".

PASS getComputedStyle(c1Spans[0]).backgroundColor is transparent
PASS getComputedStyle(c1Spans[1]).backgroundColor is transparent
PASS getComputedStyle(c2Spans[0]).backgroundColor is transparent
PASS getComputedStyle(c2Spans[1]).backgroundColor is transparent
PASS internals.updateStyleAndReturnAffectedElementCount() is 3
PASS getComputedStyle(c1Spans[0]).backgroundColor is green
PASS getComputedStyle(c1Spans[1]).backgroundColor is green
PASS internals.updateStyleAndReturnAffectedElementCount() is 3
PASS getComputedStyle(c2Spans[0]).backgroundColor is green
PASS getComputedStyle(c2Spans[1]).backgroundColor is green
PASS successfullyParsed is true

TEST COMPLETE

This text should be green This text should be green
This text should be green This text should be green