.position() returns an offset from the static element on IE and Edge

The following code is an implementation of .position() from jquery-3.4.1.js.

// Account for the *real* offset parent, which can be the document or its root element
// when a statically positioned element is identified
doc = elem.ownerDocument;
offsetParent = elem.offsetParent || doc.documentElement;
while ( offsetParent &&
	( offsetParent === doc.body || offsetParent === doc.documentElement ) &&
	jQuery.css( offsetParent, "position" ) === "static" ) {

	offsetParent = offsetParent.parentNode;
}

Does the .position() need the parent of root only ?
I do not think so.
If so, the code should be "if" and not "while".

( offsetParent === doc.body || offsetParent === doc.documentElement )

is not repeat condition, it is break condition I think.

In IE and Edge, if the target element in the table, the .position() returns offset from the table-cell (it's IE and Edge's offsetParent).

I guess the code is intended to be:

	!( offsetParent === doc.body || offsetParent === doc.documentElement ) &&

Note by @mgol: I edited the post to add code formatting. (2019-07-01)

Start with the .position() implementation shown from jquery-3.4.1.js and reproduce the behavior in IE or Edge using a target inside a table. Trace how offsetParent is handled for table elements, then verify the intended offset behavior with a focused regression test covering that case.