JS error when using font awesome picker

Issue #1 resolved
Manoj Solanki created an issue

Font awesome picker doesn't work when editing new bootstrap element:

Uncaught TypeError: elem.getClientRects is not a function at jQuery.fn.init.offset (jquery-3.2.1.js:9984) at Object.getWithinInfo (fontawesome-iconpicker.min.js:1) at jQuery.fn.init.a.fn.pos (fontawesome-iconpicker.min.js:1) at c.updatePlacement (fontawesome-iconpicker.min.js:1) at c.show (fontawesome-iconpicker.min.js:1) at HTMLInputElement.<anonymous> (fontawesome-iconpicker.min.js:1) at HTMLInputElement.dispatch (jquery-3.2.1.js:5206) at HTMLInputElement.elemData.handle (jquery-3.2.1.js:5014)