Misaligned Grid columns

Steps to reproduce

1. run http://zkfiddle.org/sample/2n9613c/2-mis-aligned-columns

Actual result

The right-most column has biggest misaligned position.

Reference data

We have splitted original issue into another issue. We keep the original user's data below for reference.

Fiddle:
http://zkfiddle.org/sample/33maodv/2-grid-rendering-problems

Problems showcased by grid 1:

• The first five columns are set to hflex=min, but they are not rendered as such
• On sorting the whole content jumps, the frozen area is odd, etc.
• (De)Selecting a column via the menupopup causes another odd jumping. The auxheader are wrong after some time, too. (ZK-2776)
• Changing the width of a column causes its footer to misalign (refer to ZK-2769)
• Deselect column 6, scroll to the right, scroll back to the left again: Another render error (ZK-2776)

Grid 2 showcase:
It's basically the same as grid 1 but has many more columns. Almost no render problems as seen above occur? It does still have the misaligned footer on changing the column width.

Grid 3 showcase:
This one has no sizedByContent, hflex=min applies and sorting works well. But:

• The content is initially misaligned caused by the scrollbar (current issue)
• Changing the width of a column causes its footer to misalign (refer to ZK-2769)
• Deselection of column 6 (ZK-2776)