Bug 130715 - Test that overflow content for the first and last regions in the chain is correctly displayed in different situations.
The test passes if selecting in the second region properly selects the BBBB texts and has no effect on the text in the first region.

AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
BBBB
BBBB
BBBB
BBBB
BBBB
BBBB
BBBB
BBBB
BBBB
BBBB