From: https://bugs.kde.org/show_bug.cgi?id=371707

As commented by @mardelle in the original post:

This is a really easy task. Scrubbing is enabled in src/monitor/glwidget.cpp by this line (in several places):

m_consumer->set("scrub_audio", 1);

Setting a value of 0 will disable scrubbing, so we just need to add a config option in Kdenlive Settings to enable/disabled it using a KdenliveSettings entry.