SYMPTOM:
Grid lines for the y-axis no longer respect the set interval for "Use Manual Grid" when bar graph values exceed a certain limit.
Steps to Reproduce:


CAUSE:
The manually specified interval is not respected for the Books category because there is a limit on the number of grid lines on a graph.
ACTION:
This is working as designed. If there are too many grid lines on a graph, the graph will be too cluttered and labels may overlap.
WORKAROUND:
Because the intervals cause the maximum lines on the graph to be exceeded, a user can increase the interval so that the grid lines do not exceed the maximum for all categories.