Created attachment 75009 [details]
fail - png
It fails with DRT, but passes with QtTestBrowser.
Created attachment 75010 [details]
again, this is a test font issue. The monospace font was not picked and characters didn't line-up.
It is still valid bug with Qt 4.8 and Qt 5 WK1 and WK2.
Font issue was fixed by adopting a new (more correct) font configuration when running tests.
The test now pass and patch in bug 91246 should unskip it.