Crash when modifying the time speed

[blopware]

Find the video attached.
- Open file (tested only mp4 and flv)
- Change its time speed (tested with forward 2x and 4x)
- Try to play and/or select the time cursor to set it on this new altered track

Dependencies' version according to pacman (using Archlinux):
mlt-python-bindings 6.4.1-3
sdl 1.2.15-7
librsvg 2:2.40.16-1
mplayer 37916-1
error: package 'pyxdg' was not found
python-pyqt5 5.7.1-3
python-httplib2 0.10.3-1
python-pillow 4.0.0-2
dvgrab 3.5-6
ladspa 1.13-6
sox 14.4.2-1
vid.stab 1.1-1
qt5-svg 5.8.0-1
sdl_image 1.2.12-3
libopenshot 0.1.3-3
python-pyzmq 16.0.2-2
qt5-webkit 5.8.0-1
python-setuptools 1:34.2.0-1

Openshot version 2.2.0-3. Downloaded source from github, and also happens.