[QScintilla] strange atrefacts on screen

[Petr Vanek]

hi all,

have you anybody noticed behavior like this one? (try to switch to  
"HD" to see more details)

http://www.youtube.com/watch?v=6KkyAsfOxFs

This is app using qscintilla very intensively - almost all text  
displaying widget is qsci inherited one. This behavior appears when  
there are at least 2 qsci instances opened.

I thought it could be some parent widget issue, but it looks like the  
parent widget is always set and it's valid. The top level parent is  
QMdiArea.

Note that the artefacts are painted only around the "current line"  
marker.

Confirmed on Linux and Macosx.

all the best,
petr vanek