FIX #18718 TIME 0:10 fix empty width

src/frontend/app/signatures/signatures.component.ts

@@ -122,7 +122,7 @@ export class SignaturesComponent implements OnInit {
         let percentWidth: any;
         const signatureScaling: any = this.authService.user.preferences.signatureScaling;
         const signatureWidth: number = this.signatureWidth >= this.documentWidth ? 100 : (this.signatureWidth * 100) / this.documentWidth;
-        if (signatureScaling === undefined) {
+        if (signatureScaling === false) {
             percentWidth = 25;
         } else {
             percentWidth = signatureScaling === false ? signatureWidth : signatureScaling;