I don't know a good way to describe this bug, so I've made a video:
https://youtu.be/1YrHNXxRsVU
You can try to reproduce the bug by using the attached project and navigating between the existing folders and their contents.
Tested on Slackware 14.2 + qt 4.8.7 - SciDAVis 1.23.4 built from source
New info: after the problem starts, if you click on a window of another software the behavior in SciDAVis return to its normal and start again only when you change the working folder.