I discovered each time I am changing the Y-axis % of a channel with my mouse directly on the chart or move the positioning of the channel, I can't change the channel properties anymore (colors, filters etc).
Would you have an idea of what the problem is?
What version of Toolbox are you using please? Are you sure you are trying to change the properties under 'Display' properties rather than 'Workbook' properties?
If you're changing the Workbook properties when its already in the display, you will experience the problem you mention.