Hi Shane,
Thanks for reporting this bug. In future, could you please report these to
support@motivewave.com instead?
I believe what is happening here is the "spacing" setting is being ignored and defaulting to 100.
When it adds the lines some of the lines are being ignored since they are within 100 pixels of an existing line.
I was not able to reproduce the disappearing lines that you displayed at the beginning of the video (I am on version 6.0.0).
We will have the fix for the spacing setting in 6.0.1.