2 <p>Trigger layout inside a clipped box inside a multicol container that has a spanner. Then trigger
3 layout outside the clipped box, but still inside the multicol container. This tests that we
4 don't perform any optimized subtree layout operations incompatible with multicol (which would
5 typically cause assertion failures).
</p>
6 <p>You should see a blue square below, and nothing else (no red, no
"FAIL").
</p>
7 <div style=
"width:4em; height:4em; background:blue;"></div>