FIX #18091 TIME 0:05 use real width of main document

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

@@ -122,7 +122,8 @@ export class SignaturesComponent implements OnInit {
         let percentWidth: any;
         const realWith: number = this.realSizes.find((sign: any) => sign.id === signature.id).width;
         const signatureScaling: any = this.authService.user.preferences.signatureScaling;
-        const signatureWith: number = realWith >= this.realSizes.find((item: any) => item.id === 'mainContent').width ? 100 : (realWith * 100) / this.signaturesService.workingAreaWidth;
+        const mainDocWidth: number = this.realSizes.find((item: any) => item.id === 'mainContent').width;
+        const signatureWith: number = realWith >= mainDocWidth ? 100 : (realWith * 100) / mainDocWidth;
         if (signatureScaling === undefined) {
             percentWidth = 25;
         } else {