When using the Chart Web Part (horizontal bars) only every fifth bar-label gets displayed. The end user can't see what the other bars represent.
Is there a way to display every label for one axis?
And as soon as I said it, I found the right way.
Go to advanced properties, and set the interval for the x-axis to 1 and variable instead of fixed.
Imho the default interval should be 1 and the user should have the option to increase the labeling interval.