In #1 I was facing a jump back of the waveform. This can actually occur due to a QT Bug https://bugreports.qt-project.org/browse/QTBUG-19637 https://bugreports.qt-project.org/browse/QTBUG-22439 fixed in Qt 4.8
In #1 I was facing a jump back of the waveform. /bugreports. qt-project. org/browse/ QTBUG-19637 /bugreports. qt-project. org/browse/ QTBUG-22439
This can actually occur due to a QT Bug
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fixed in Qt 4.8