diff --git a/src/js/modules/infragistics.ui.combo.js b/src/js/modules/infragistics.ui.combo.js
index b26ea6206..1bbe10afb 100644
--- a/src/js/modules/infragistics.ui.combo.js
+++ b/src/js/modules/infragistics.ui.combo.js
@@ -2960,7 +2960,7 @@
 			// Remove readonly during the focus
 			// R.K. 29th August 2017, #1155 Combo in dropdown mode accepts keypress values in its input in IE/Edge
 			if (readonly && !($.ig.util.isEdge || $.ig.util.isIE)) {
-				this._options.$input.removeAttr("readonly");
+				this._options.$input.prop("readonly", false);
 			}
 
 			// Setting the range without focus won't work in most browsers
diff --git a/src/js/modules/infragistics.ui.editors.js b/src/js/modules/infragistics.ui.editors.js
index e5f66086b..5b495df02 100644
--- a/src/js/modules/infragistics.ui.editors.js
+++ b/src/js/modules/infragistics.ui.editors.js
@@ -1041,7 +1041,7 @@
 			if (delay) {
 				this._timeouts.push(setTimeout(function () { self.field().focus(); }, delay));
 			} else {
-				this.field().focus();
+				this.field().trigger("focus");
 			}
 		},
 		_setFocus: function (event) {
diff --git a/src/js/modules/infragistics.util.jquery.js b/src/js/modules/infragistics.util.jquery.js
index 1244740fe..65ed4ba5e 100644
--- a/src/js/modules/infragistics.util.jquery.js
+++ b/src/js/modules/infragistics.util.jquery.js
@@ -214,7 +214,7 @@
 
 				// Get correct offsets
 				offset = this.igOffset();
-				if ( !$.nodeName( offsetParent[ 0 ], "html" ) ) {
+				if ( offsetParent[ 0 ].tagName.toLowerCase() !== "html" ) {
 					parentOffset = offsetParent.igOffset();
 				}