chore(*): resolving further column and width issues

Author: ChronosSF

projects/igniteui-angular/src/lib/grids/columns/column-group.component.ts

@@ -163,8 +163,6 @@ export class IgxColumnGroupComponent extends IgxColumnComponent implements After
         if (this.headTemplate && this.headTemplate.length) {
             this._headerTemplate = this.headTemplate.toArray()[0].template;
         }
-        // Delete the line below once we update to Angular 9
-        this.children.reset(this.children.toArray().slice(1));
         this.children.forEach(child => {
             child.parent = this;
         });

projects/igniteui-angular/src/lib/grids/columns/column.component.ts

@@ -312,7 +312,12 @@ export class IgxColumnComponent implements AfterContentInit {
             this._calcWidth = null;
             this.calcPixelWidth = NaN;
             this.widthSetByUser = true;
-            this._width = typeof(value) === 'number' ? value + 'px' : value;
+            // width could be passed as number from the template
+            // host bindings are not px affixed so we need to ensure we affix simple number strings
+            if (typeof(value) === 'number' || value.match(/^[0-9]*$/)) {
+                value = value + 'px';
+            }
+            this._width = value;
             if (this.grid) {
                 this.cacheCalcWidth();
             }