A killer bug is the opposite of a killer feature: a reason why a software is absolutely unusable. And this is exactly what I see right now with Shotcut (version 17.05.02 on a Lenovo Thinkpad 430s, 64bit, with OpenSuse Leap 42.3 system).
And this bug is plain simple: for me Shotcut has no functional timeline - and with this it is simply not a video editor! It shows only the word “Timeline” - and does nothing.
This is a pity because otherwise the software looks promising!
A search has only shown me that this killer but was already discussed years ago (like here), and it seems that it happened on many systems, but the discussion was closed without a solution. Later discussions (like here were closed even with a simple link to the other unsolved thread, so it looks to me like the developers have the impression that they “have done what is possible”!
And no, it is also not “poor OpenGL” I would say because I am working with rather demanding OpenGL software (ParaView) every day on the same computer. Still it might of course be some specific OpenGL function - no idea.
Overall this is a pity, so I simply want to reopen the issue because for those who are affected it is not just a little nuisance, but it makes the software plain unusable.
In other words: It is a killer bug and should be kept open until somebody finds a real solution! Because also restarting the app is not a workaround - because the problem remains after the restart: The timeline is not sometimes not working, but never working at all - from the very beginning.
Last words: I do not want to be rude with or frustrate the volonteer developers who might not see themselves able to fix the software: I am always very happy with all the work they are putting into a lot of powerful Open Source software - and I am trying to add my own share on other construction sites! Still I am now trying to find another video editing software - simply one that works.