SGWT 5 - duplicated values in grouped columns

Hi

We've noticed a duplication of values in a specific scenario:

1. hide a column with summary (in this example - Population)
2. group another column (Country)

As a result, duplicated values appear for each grouped country.
However, after reversing action order - group first and then hide column - values are not duplicated.

Screenshots illustrating both results and a complete test case are included in attachments.

Important version info:

GWT: 2.6.1
SGWT: 5.0 pro (build: 2015-07-29)
Chrome Version 43.0.2357.134 (64-bit) or Firefox 39.0
Ubuntu 15.04

Attached Images

	single_group_value.png (18.3 KB)
	duplicated_values.png (20.5 KB)

Attached Files

TestCase.java (20.8 KB)