When we select text 'Vestibulum neque massa, scelerisque sit amet ligula eu, congue molestie mi. Praesent ut
varius sem. Nullam at porttitor arcu, nec lacinia nisi. Ut ac dolor vitae odio interdum
condimentum.' from given sample pdf file then
let range = document.getSelection().getRangeAt(0);
RangeFix.getClientRects(range); returns the 3 rects in firefox and 4 rects in chrome browser.
Please find the attached document.
file-sample_150kB.pdf