Fixes:

* Inline editing
* Styling for modal footers.
* Undefined fix in string properties

backend/src/Squidex.Domain.Apps.Core.Model/Schemas/BooleanFieldProperties.cs

@@ -7,6 +7,7 @@
 
 namespace Squidex.Domain.Apps.Core.Schemas
 {
+    [Equals(DoNotAddEqualityOperators = true)]
     public sealed class BooleanFieldProperties : FieldProperties
     {
         public bool? DefaultValue { get; set; }

frontend/app/features/content/shared/list/content-value-editor.component.html

@@ -38,9 +38,9 @@
                     <sqx-toggle [formControlName]="field.name" [threeStates]="!field.properties.isRequired"></sqx-toggle>
                 </ng-container>
                 <ng-container *ngSwitchCase="'Checkbox'">
-                    <ng-container class="form-check form-check-inline">
+                    <div class="form-check form-check-inline">
                         <input class="form-check-input" type="checkbox" [formControlName]="field.name" sqxIndeterminateValue />
-                    </ng-container>
+                    </div>
                 </ng-container>
             </ng-container>
         </ng-container>

frontend/app/features/schemas/pages/schema/fields/types/string-validation.component.ts

@@ -111,7 +111,7 @@ export class StringValidationComponent extends ResourceOwner implements OnChange
     }
 
     private setPatternName() {
-        const value = this.editForm.controls['pattern'].value;
+        const value = this.editForm.controls['pattern']?.value;
 
         if (!value) {
             this.patternName = '';

frontend/app/theme/_bootstrap.scss

@@ -708,6 +708,8 @@ $icon-size: 4.5rem;
     }
 
     &-footer {
+        padding: .75rem 1.25rem;
+
         .clearfix {
             width: 100%;
         }