https://bugs.kde.org/show_bug.cgi?id=381381
Bug ID: 381381
Summary: window flicker during initial page load and when
moving mouse over active elements
Product: konqueror
Version: 5.0.97
Platform: Compiled Sources
OS: OS X
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: webenginepart
Assignee: konq-b...@kde.org
Reporter: rjvber...@gmail.com
Target Milestone: ---
Konqueror shows very fast whole-window flicker when loading a page as well as
when moving the mouse over "active elements" (presumably links, possibly other
elements too).
I first noticed this in 17.04.2 but it is also present in 16.12.0. It may be a
regression in QtWebEngine 5.8.0 but I do NOT observe the same glitch in
Qupzilla using the same Qt install. The issue also disappears when switching to
the KHtml engine. The issue also disappears when I use the XCB QPA (still on
Mac).
Any chance it could be related to these terminal warnings?
```
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::translate: Painter not active
QPainter::setClipRect: Painter not active
QPainter::save: Painter not active
QPainter::setRenderHint: Painter must be active to set rendering hints
QPainter::fillPath: Painter not active
QPainter::restore: Unbalanced save/restore
QPainter::hasClipping: Painter not active
QPainter::setPen: Painter not active
QPainter::setBrush: Painter not active
QPainter::drawRects: Painter not active
QPainter::save: Painter not active
QPainter::setRenderHint: Painter must be active to set rendering hints
(etc)
```
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