Hej team, I also had same issues with kdenlive being unusable a few weeks back: dropping any clip on the timeline crashed kdenlive. From gut-feeling, no further investigation though, it might had also something to do with audio or another playback related issue.
Now, after upgrade to latest 19.04.3-3 and potentially related upgrades in dependend packages *it seems to work again*. This bug may be resolved now. Can the initial reporter confirm? It is definitely NOT tag:a11y. cheers, Thorsten
