chore: Follow up fix

lib/pages/new_private_chat/new_private_chat_view.dart

@@ -39,7 +39,10 @@ class NewPrivateChatView extends StatelessWidget {
           )
         ],
       ),
-      body: MaxWidthBody(
+      body: Column(
+        children: [
+          Expanded(
+            child: MaxWidthBody(
               withScrolling: true,
               child: Container(
                 margin: const EdgeInsets.all(_qrCodePadding),
@@ -71,7 +74,8 @@ class NewPrivateChatView extends StatelessWidget {
                 ),
               ),
             ),
-      bottomNavigationBar: MaxWidthBody(
+          ),
+          MaxWidthBody(
             withScrolling: false,
             child: Padding(
               padding: const EdgeInsets.all(12.0),
@@ -102,12 +106,17 @@ class NewPrivateChatView extends StatelessWidget {
               ),
             ),
           ),
+        ],
+      ),
       floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
       floatingActionButton: PlatformInfos.isMobile && !controller.hideFab
-          ? FloatingActionButton.extended(
+          ? Padding(
+              padding: const EdgeInsets.only(bottom: 64.0),
+              child: FloatingActionButton.extended(
                 onPressed: controller.openScannerAction,
                 label: Text(L10n.of(context)!.scanQrCode),
                 icon: const Icon(Icons.camera_alt_outlined),
+              ),
             )
           : null,
     );