diff --git a/client/src/app/core/translate/translation-service.ts b/client/src/app/core/translate/translation-service.ts
index e9b35e7bf..e76135e57 100644
--- a/client/src/app/core/translate/translation-service.ts
+++ b/client/src/app/core/translate/translation-service.ts
@@ -46,7 +46,7 @@ export class OpenSlidesTranslateService extends TranslateService {
      *
      * @override
      */
-    public get(key: string | Array<string>, interpolateParams?: Object): Observable<string | any> {
+    public get(key: string | string[], interpolateParams?: Object): Observable<string | any> {
         try {
             return super.get(key, interpolateParams);
         } catch {
@@ -59,7 +59,7 @@ export class OpenSlidesTranslateService extends TranslateService {
      *
      * @override
      */
-    public stream(key: string | Array<string>, interpolateParams?: Object): Observable<string | any> {
+    public stream(key: string | string[], interpolateParams?: Object): Observable<string | any> {
         try {
             return super.stream(key, interpolateParams);
         } catch {
@@ -72,7 +72,7 @@ export class OpenSlidesTranslateService extends TranslateService {
      *
      * @override
      */
-    public instant(key: string | Array<string>, interpolateParams?: Object): string | any {
+    public instant(key: string | string[], interpolateParams?: Object): string | any {
         try {
             return super.instant(key, interpolateParams);
         } catch {
diff --git a/client/src/app/core/ui-services/html-to-pdf.service.ts b/client/src/app/core/ui-services/html-to-pdf.service.ts
index 648061c4f..01a2b1d30 100644
--- a/client/src/app/core/ui-services/html-to-pdf.service.ts
+++ b/client/src/app/core/ui-services/html-to-pdf.service.ts
@@ -284,7 +284,7 @@ export class HtmlToPdfService {
      * @param styles the styles array, usually just to parse back into the `parseElement` function
      * @returns an array of parsed children
      */
-    private parseChildren(element: any, styles?: Array<string>): any {
+    private parseChildren(element: any, styles?: string[]): any {
         const childNodes = element.childNodes;
         const paragraph = [];
         if (childNodes.length > 0) {
diff --git a/client/src/app/core/ui-services/pdf-document.service.ts b/client/src/app/core/ui-services/pdf-document.service.ts
index fc74f8022..7853b6999 100644
--- a/client/src/app/core/ui-services/pdf-document.service.ts
+++ b/client/src/app/core/ui-services/pdf-document.service.ts
@@ -288,7 +288,7 @@ export class PdfDocumentService {
         const columns = [];
         let logoContainerWidth: string;
         let pageNumberPosition: string;
-        let logoContainerSize: Array<number>;
+        let logoContainerSize: number[];
         let logoFooterLeftUrl = this.configService.instant<any>('logo_pdf_footer_L').path;
         let logoFooterRightUrl = this.configService.instant<any>('logo_pdf_footer_R').path;
 
diff --git a/client/src/app/shared/components/search-value-selector/search-value-selector.component.spec.ts b/client/src/app/shared/components/search-value-selector/search-value-selector.component.spec.ts
index 510993722..a45c4e480 100644
--- a/client/src/app/shared/components/search-value-selector/search-value-selector.component.spec.ts
+++ b/client/src/app/shared/components/search-value-selector/search-value-selector.component.spec.ts
@@ -34,7 +34,7 @@ describe('SearchValueSelectorComponent', () => {
     });
 
     it('should create', () => {
-        const subjectList: Array<Selectable> = [];
+        const subjectList: Selectable[] = [];
         for (let index = 0; index < 20; index++) {
             subjectList.push(new EmptySelectable());
         }
diff --git a/client/src/app/shared/components/sorting-list/sorting-list.component.spec.ts b/client/src/app/shared/components/sorting-list/sorting-list.component.spec.ts
index c843b94ff..a08f473b1 100644
--- a/client/src/app/shared/components/sorting-list/sorting-list.component.spec.ts
+++ b/client/src/app/shared/components/sorting-list/sorting-list.component.spec.ts
@@ -31,7 +31,7 @@ describe('SortingListComponent', () => {
     });
 
     it('should create', () => {
-        const inputList: Array<Selectable> = [];
+        const inputList: Selectable[] = [];
         for (let index = 0; index < 20; index++) {
             inputList.push(new EmptySelectable());
         }
diff --git a/client/src/app/shared/components/sorting-list/sorting-list.component.ts b/client/src/app/shared/components/sorting-list/sorting-list.component.ts
index ed304f72d..ba453fa4f 100644
--- a/client/src/app/shared/components/sorting-list/sorting-list.component.ts
+++ b/client/src/app/shared/components/sorting-list/sorting-list.component.ts
@@ -34,7 +34,7 @@ export class SortingListComponent implements OnInit, OnDestroy {
     /**
      * Sorted and returned
      */
-    public array: Array<Selectable>;
+    public array: Selectable[];
 
     /**
      * Declare the templateRef to coexist between parent in child
diff --git a/client/src/app/site/config/components/config-field/config-field.component.ts b/client/src/app/site/config/components/config-field/config-field.component.ts
index bafdfc5fd..ad6fd6b44 100644
--- a/client/src/app/site/config/components/config-field/config-field.component.ts
+++ b/client/src/app/site/config/components/config-field/config-field.component.ts
@@ -187,10 +187,23 @@ export class ConfigFieldComponent extends BaseComponent implements OnInit {
         }
         this.updateSuccessIconTimeout = <any>setTimeout(() => {
             this.updateSuccessIcon = false;
-            this.cdRef.detectChanges();
+            if (!this.wasViewDestroyed()) {
+                this.cdRef.detectChanges();
+            }
         }, 2000);
         this.updateSuccessIcon = true;
-        this.cdRef.detectChanges();
+        if (!this.wasViewDestroyed()) {
+            this.cdRef.detectChanges();
+        }
+    }
+
+    /**
+     * @returns true, if the veiw was destroyed. Note: This
+     * needs to access internal attributes from the change detection
+     * reference.
+     */
+    private wasViewDestroyed(): boolean {
+        return (<any>this.cdRef).destroyed;
     }
 
     /**
diff --git a/client/src/app/site/motions/services/motion-poll-pdf.service.ts b/client/src/app/site/motions/services/motion-poll-pdf.service.ts
index c4377c113..74050fc9b 100644
--- a/client/src/app/site/motions/services/motion-poll-pdf.service.ts
+++ b/client/src/app/site/motions/services/motion-poll-pdf.service.ts
@@ -164,7 +164,7 @@ export class MotionPollPdfService {
      * @param subtitle: second  line for the ballot.
      * @returns an array of content objects defining pdfMake instructions
      */
-    private getContent(title: string, subtitle: string): Array<object> {
+    private getContent(title: string, subtitle: string): object[] {
         const content = [];
         const amount = this.getBallotCount();
         const fullpages = Math.floor(amount / 8);
@@ -275,7 +275,7 @@ export class MotionPollPdfService {
      * @param size the size of the circle
      * @returns an array containing one circle definition for pdfMake
      */
-    private drawCircle(y: number, size: number): Array<object> {
+    private drawCircle(y: number, size: number): object[] {
         return [
             {
                 type: 'ellipse',