Test build	1 2 3 4 5 None selected 1 2 3 4 5	Everything fine.
Test build with optgroups	1 2 3 4 5 1 1,2 1 2 3,4,5 3 4 5	Everything fine.
Test build with selected options	1 2 3 4 5 1 1 2 3 4 5	Everything fine.
Test build with select all	Select all 1 2 3 4 5 None selected Select all 1 2 3 4 5	Everything fine.
Test build with filter	1 2 3 4 5 None selected 1 2 3 4 5	Everything fine.
Test select	1 2 3 4 5 1, 2, 3 1 2 3 4 5	Everything fine.
Test deselect	1 2 3 4 5 None selected 1 2 3 4 5	Everything fine.
Test max height	1 2 3 4 5 6 7 8 9 10 11 12 13 None selected 1 2 3 4 5 6 7 8 9 10 11 12 13	Everything fine.