This is weird. I have a line graph with dates on the x axis and floats on the y axis. There are consecutive dates (weekends) where the y value is the same as the previous day.
In some of the weekends (not all), the line has a gap where I expect to see a horizontal line.
Adding “connectgaps=True” doesn’t fix this problem.
If I change the mode from “lines” to “lines+markers”, the problem is fixed! But I don’t want markers 
The bug only presents itself on some of my datasets. Some datasets are 100% fine, others have a few gaps, and others have lots of gaps.
One of the worst offenders. Notice that the data has no gaps where the line is missing. https://plot.ly/create/?fid=cecilpl:61
