Column alignment distorts after Fixed Size with Freezed Header
In the Tree Grid configuration on selecting Fixed Size and Freeze Pane as Header Row, it is observed that the columns' alignment is distorted.
Steps to Reproduce
1. Private checkout the pxTreeGrid section used for Tree Grid demo in User Interface Gallery.
2. Increase the number of columns to 15 or 17.
3. Check the column alignment.
ResolutionSet the width of the Tree Grid to Pixels(Fit Content) to fix the issue.