I described the problem with the fix ealy in the answer, but forgot to post it in the forum.

The problem is easy. The current code of showHideCol increase or decrease correctly the grid width only in case of shrinkToFit===false. In the code will be corrected adjusted the value of $t.p.tblwidth in the line, but the value will be just ignored in the following line.

To fix the problem I suggest modify the line

to the following

and modify another line

to

It's all the bug ifself. Another issue described in the answer is more the changing of behavior on the column resizing.

The resizeStop described in the answer

I use personally always since I wrote the answer. I like the behavior because I don't specify width parameter of the grid and want to hold the width of grid as the sum of the width of all columns. So it's logical to increase or decrease the width of the grid after resizing of the column. As the result one have grid which never have any horizontal scroll bar.

To make common solution from the above code one can just save the original value of the width parameter of the grid in for example orgWidth parameter. In the case one can test it inside of dragEnd (somewhere before calling of resizeStop) and do the same as above in case if orgWidth parameter converted to int is NaN.

Best regards
Oleg