Horizontal scrollbar when text is long in Opera 12.17

Environment
Opera 12.17

Scenario #1
Steps to reproduce
1. Open main page via Opera

Actual result
There is a horizontal scrollbar

Expected result
There is no scrollbar

Scenario #2
Steps to reproduce
1. Create post with text

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Actual result
There are horizontal scrollbars in topic and user post list

Expected result
There is no scrollbars

Note
It seems, too wide branch description is the reason of the bug. See linked issue and screenshot for more info