diff --git a/src/main.cpp b/src/main.cpp
index 953c69ee2d..3c8b01838f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -529,7 +529,9 @@ int main(int argc, char* argv[])
                 req.addSaveTask();
             }
         }
-        return requestCaptureAndWait(req);
+        int guiExitCode = requestCaptureAndWait(req);
+        delete qApp;
+        return guiExitCode;
     } else if (parser.isSet(fullArgument)) { // FULL
         reinitializeAsQApplication(argc, argv, translator, qtTranslator);
 
@@ -564,7 +566,11 @@ int main(int argc, char* argv[])
         if (!clipboard && path.isEmpty() && !raw && !upload) {
             req.addSaveTask();
         }
-        return requestCaptureAndWait(req);
+        {
+            int fullExitCode = requestCaptureAndWait(req);
+            delete qApp;
+            return fullExitCode;
+        }
     } else if (parser.isSet(screenArgument)) { // SCREEN
         reinitializeAsQApplication(argc, argv, translator, qtTranslator);
 
@@ -614,7 +620,11 @@ int main(int argc, char* argv[])
             req.addSaveTask();
         }
 
-        return requestCaptureAndWait(req);
+        {
+            int screenExitCode = requestCaptureAndWait(req);
+            delete qApp;
+            return screenExitCode;
+        }
     } else if (parser.isSet(configArgument)) { // CONFIG
         bool autostart = parser.isSet(autostartOption);
         bool notification = parser.isSet(notificationOption);
@@ -680,6 +690,6 @@ int main(int argc, char* argv[])
         }
     }
 finish:
-
+    delete qApp;
     return 0;
 }
diff --git a/src/utils/valuehandler.cpp b/src/utils/valuehandler.cpp
index 99c2bbe1da..fbd4bb502b 100644
--- a/src/utils/valuehandler.cpp
+++ b/src/utils/valuehandler.cpp
@@ -530,11 +530,15 @@ bool Region::check(const QVariant& val)
 
 QVariant Region::process(const QVariant& val)
 {
-    // FIXME: This is temporary, just before D-Bus is removed
+    // Create a temporary QApplication if there is no global Qt application
+    // instance at all. Creating one while a QCoreApplication already exists
+    // is forbidden by Qt: the second constructor aborts early, but its
+    // destructor still runs and corrupts global state (e.g. Wayland
+    // connections), causing subsequent portal calls to hang.
     auto argv = std::make_unique<char*[]>(1);
     auto argc = std::make_unique<int>(0);
     std::unique_ptr<QApplication> tempApp;
-    if (QGuiApplication::screens().empty()) {
+    if (!QCoreApplication::instance()) {
         tempApp = std::make_unique<QApplication>(*argc, argv.get());
     }