Everything works fine now :)

Common/source/am/am_LibraryApplet.cpp

@@ -7,12 +7,9 @@ namespace am
 
     bool LibraryAppletIsActive()
     {
-        bool active = false;
-        if(applet_holder.StateChangedEvent.revent == INVALID_HANDLE) active = false;
-        if(!serviceIsActive(&applet_holder.s)) active = false;
-        active = !appletHolderCheckFinished(&applet_holder);
-        if(!active) appletUpdateCallerAppletCaptureImage();
-        return active;
+        if(applet_holder.StateChangedEvent.revent == INVALID_HANDLE) return false;
+        if(!serviceIsActive(&applet_holder.s)) return false;
+        return !appletHolderCheckFinished(&applet_holder);
     }
 
     bool LibraryAppletIsQMenu()

Common/source/applet_TempWrap.cpp

@@ -0,0 +1,26 @@
+#include <q_Include.hpp>
+
+extern "C"
+{
+    void __appExit(void);
+    void NORETURN __nx_exit(Result rc, LoaderReturnFn retaddr);
+
+    void NORETURN __libnx_exit(int rc)
+    {
+        // Call destructors.
+        void __libc_fini_array(void);
+        __libc_fini_array();
+
+        // Clean up services.
+        __appExit();
+
+        // 3.0.0 libnx fucked up _appletExitProcess() process-exiting call, and fixed it in later commits.
+        // Adding this manually until a new version is released with the fix, then this will be removed.
+
+        // Explicitly initialize applet again, since applet-based exiting needs this, and since it isn't added in 3.0.0, we wrap it here
+        // TODO: remove this when next libnx releases
+        appletInitialize();
+
+        __nx_exit(0, envGetExitFuncPtr());
+    }
+}

LibraryAppletQMenu/source/Main.cpp

@@ -55,6 +55,9 @@ namespace qmenu
         net::Finalize();
         nsExit();
         accountExit();
+
+        // Explicitly call appletExit (due to bad handling in 3.0.0 libnx)
+        appletExit();
     }
 }