merged from protocol 4 branch; fix for DFL-640, Dragonfly's scrollbars disappear when a breakpoint is hit more than once within a loop.
merged from protocol 4 branch; fix for DFL-640, Dragonfly's scrollbars disappear when a breakpoint is hit more than once within a loop.

operasoftware/dragonfly,operasoftware/dragonfly,operasoftware/dragonfly,operasoftware/dragonfly