The main plot with "Display article sidebar" unchecked is not displayed in the Storyteller's Screen. The same plot with "Display article sidebar" checked is displayed in the Storyteller's Screen. I do not have the same issue with the sub-plots.
1/ Have a main plot with sub-plot, attached to my campaign 2/ It is correctly listed in the CAMPAIGN PLOTS TREE as the first main plot 3/ Leave the "Display article sidebar (override)" option checked 4/ Go on the Storyteller's Screen, start "Prepare Session" 5/ Select the "Plot" tab, the plot content is displayed 6/ Edit the Plot and uncheck the "Display article sidebar (override)" option 7/ Go back on the Storyteller's Screen 8 Select the "Plot" tab, nothing is t is displayed
I have tested it again today. It is working now. This bug report can be closed.