has this 1px problem been solved?
There is no option to use border-collapse: collapse with DataTables when in scrolling mode I'm afraid. It simply makes the calculations to align the table header and body impossible (since they don't actually add up correctly! They are dependent upon the body content as well as the header content).
You need to use border-collapse: separate which is why the DataTables stylesheet sets that explicitly.
thank you Allan, this solves it very well
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