See the attached image.

Steps to reproduce:
1. I checked the checkboxes 'Product' and 'Price'. The Product field added to row labels, and price to values.
2. Unchecked the 'Price', the price field removed from the pivot.
3. Unchecked the Product, doesn't  remove the products from the pivot.

Applying "% Difference From" total format to a calculated description formats the calculated data in RadPivotGrid as double, instead of as a percent.

Available with the R3 2016 SP1 release.

It happens when you change the distinct values selection several times. The PivotGrid disappears after the exception is thrown.
I managed to reproduce it in the demo by repeating this action around ten times.

Available in LIB version 2016.2.606, it will be also available in the 2016 R2 SP1 release.

Available in LIB version 2015.2.914, it will be also available in the 2015 Q3.

If you have WriteOnly property in your Data Item and you set a collection of DataItems as ItemsSource of LocalDataSourceProvider, RadPivotGrid and RadPivotFieldList will not show any data.

In OLAP you are able to define ragged hierarchies. In a ragged hierarchy, the logical parent member of at least one member is not in the level immediately above the member. This can cause branches of the hierarchy to descend to different levels. RadPivotGrid doesn't show them correctly.