Merge branch '9.0.x' into mkirova/fix-6701-9.0.x

Author: kdinev

projects/igniteui-angular/src/lib/core/styles/themes/schemas/light/_toast.scss

@@ -56,6 +56,10 @@ $_bootstrap-toast: extend(
     (
         variant: 'bootstrap',
         background: #fff,
+
+        text-color: (
+            igx-color: ('grays', 600)
+        )
     )
 );
 

projects/igniteui-angular/src/lib/grids/grid-base.directive.ts

@@ -2430,6 +2430,7 @@ export class IgxGridBaseDirective extends DisplayDensityBase implements
     private _unpinnedWidth = NaN;
     private _visibleColumns = [];
     private _columnGroups = false;
+    private _autoGeneratedCols = [];
     protected _headerFeaturesWidth = NaN;
 
     private _columnWidth: string;
@@ -4498,6 +4499,12 @@ export class IgxGridBaseDirective extends DisplayDensityBase implements
      */
     protected onColumnsChanged(change: QueryList<IgxColumnComponent>) {
         const diff = this.columnListDiffer.diff(change);
+        if (this.autoGenerate && this.columnList.length === 0 && this._autoGeneratedCols.length > 0) {
+            // In Ivy if there are nested conditional templates the content children are re-evaluated
+            // hence autogenerated columns are cleared and need to be reset.
+            this.columnList.reset(this._autoGeneratedCols);
+            return;
+        }
         if (diff) {
             let added = false;
             let removed = false;
@@ -4721,6 +4728,7 @@ export class IgxGridBaseDirective extends DisplayDensityBase implements
             ref.changeDetectorRef.detectChanges();
             columns.push(ref.instance);
         });
+        this._autoGeneratedCols = columns;
 
         this.columnList.reset(columns);
         if (data && data.length > 0) {