diff --git a/app/src/main/jni/input_bridge.c b/app/src/main/jni/input_bridge.c
index 2b988cab2..29ef3c7f2 100644
--- a/app/src/main/jni/input_bridge.c
+++ b/app/src/main/jni/input_bridge.c
@@ -34,6 +34,7 @@ JNIEXPORT void JNICALL Java_org_lwjgl_glfw_CallbackBridge_sendData(JNIEnv* env,
         
         attachThreadIfNeed(&isRuntimeThreadAttached);
     } else {
+        printf("cancel input, env=%p\n", env);
         return;
     }