diff --git a/src/rime/gear/navigator.cc b/src/rime/gear/navigator.cc
index 9a2d128d00..2802005072 100644
--- a/src/rime/gear/navigator.cc
+++ b/src/rime/gear/navigator.cc
@@ -60,6 +60,9 @@ Navigator::Navigator(const Ticket& ticket)
   Config* config = engine_->schema()->config();
   LoadConfig(config, "navigator", Horizontal);
   LoadConfig(config, "navigator/vertical", Vertical);
+
+  engine_->context()->select_notifier().connect(
+      [this](Context* ctx) { OnSelect(ctx); });
 }
 
 ProcessResult Navigator::ProcessKeyEvent(const KeyEvent& key_event) {
@@ -74,6 +77,10 @@ ProcessResult Navigator::ProcessKeyEvent(const KeyEvent& key_event) {
                                               FallbackOptions::All);
 }
 
+void Navigator::OnSelect(Context* ctx) {
+  spans_.Clear();
+}
+
 bool Navigator::LeftBySyllable(Context* ctx) {
   BeginMove(ctx);
   size_t confirmed_pos = ctx->composition().GetConfirmedPosition();
@@ -84,6 +91,7 @@ bool Navigator::LeftBySyllable(Context* ctx) {
 bool Navigator::LeftByChar(Context* ctx) {
   BeginMove(ctx);
   MoveLeft(ctx) || GoToEnd(ctx);
+  spans_.Clear();
   return true;
 }
 
@@ -107,6 +115,7 @@ bool Navigator::RightBySyllable(Context* ctx) {
 bool Navigator::RightByChar(Context* ctx) {
   BeginMove(ctx);
   MoveRight(ctx) || GoHome(ctx);
+  spans_.Clear();
   return true;
 }
 
diff --git a/src/rime/gear/navigator.h b/src/rime/gear/navigator.h
index 53ea35cb48..f6205e8ba2 100644
--- a/src/rime/gear/navigator.h
+++ b/src/rime/gear/navigator.h
@@ -42,6 +42,7 @@ class Navigator : public Processor, public KeyBindingProcessor<Navigator, 2> {
   bool MoveRight(Context* ctx);
   bool GoHome(Context* ctx);
   bool GoToEnd(Context* ctx);
+  void OnSelect(Context*);
 
   string input_;
   Spans spans_;