Hello Tony,

I found that the position of columns in the summary headers is wrong in case of combination groupSummaryPos:[“header”] and groupColumnShow:[false]. The demo demonstrates the problem.

Additionally the value of colspan attribute of grouping header is wrong if groupColumnShow:[false].

The fix solves both issues. I don’t posted the fix as pull request only because another my pull request is still pending.

The following 4 demos demonstrates that the fix eliminates the described problem in any combination of multiselect and groupColumnShow options: demo1, demo2, demo3, demo4.

Best regards
Oleg