diff --git a/java/res/anim/alt_code_key_while_typing_fadeout.xml b/java/res/anim/alt_code_key_while_typing_fadeout.xml
index 88deb31..ed4a6f2 100644
--- a/java/res/anim/alt_code_key_while_typing_fadeout.xml
+++ b/java/res/anim/alt_code_key_while_typing_fadeout.xml
@@ -21,6 +21,6 @@
 <animator
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:valueType="intType"
-    android:duration="400"
+    android:duration="70"
     android:valueFrom="255"
     android:valueTo="128" />
diff --git a/java/src/com/android/inputmethod/keyboard/LatinKeyboardView.java b/java/src/com/android/inputmethod/keyboard/LatinKeyboardView.java
index df8a10a..97f4d07 100644
--- a/java/src/com/android/inputmethod/keyboard/LatinKeyboardView.java
+++ b/java/src/com/android/inputmethod/keyboard/LatinKeyboardView.java
@@ -908,7 +908,7 @@
 
     @Override
     protected void onDrawKeyTopVisuals(Key key, Canvas canvas, Paint paint, KeyDrawParams params) {
-        if (key.altCodeWhileTyping()) {
+        if (key.altCodeWhileTyping() && key.isEnabled()) {
             params.mAnimAlpha = mAltCodeKeyWhileTypingAnimAlpha;
         }
         if (key.mCode == Keyboard.CODE_SPACE) {
diff --git a/java/src/com/android/inputmethod/keyboard/PointerTracker.java b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
index ea97ba8..ed88971 100644
--- a/java/src/com/android/inputmethod/keyboard/PointerTracker.java
+++ b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
@@ -251,18 +251,19 @@
     // primaryCode is different from {@link Key#mCode}.
     private void callListenerOnCodeInput(Key key, int primaryCode, int x, int y) {
         final boolean ignoreModifierKey = mIgnoreModifierKey && key.isModifier();
-        final boolean alterCode = key.altCodeWhileTyping() && mTimerProxy.isTypingState();
-        final int code = alterCode ? key.mAltCode : primaryCode;
+        final boolean altersCode = key.altCodeWhileTyping() && mTimerProxy.isTypingState();
+        final int code = altersCode ? key.mAltCode : primaryCode;
         if (DEBUG_LISTENER) {
             Log.d(TAG, "onCodeInput: " + Keyboard.printableCode(code) + " text=" + key.mOutputText
                     + " x=" + x + " y=" + y
-                    + " ignoreModifier=" + ignoreModifierKey + " alterCode=" + alterCode
+                    + " ignoreModifier=" + ignoreModifierKey + " altersCode=" + altersCode
                     + " enabled=" + key.isEnabled());
         }
         if (ignoreModifierKey) {
             return;
         }
-        if (key.isEnabled()) {
+        // Even if the key is disabled, it should respond if it is in the altCodeWhileTyping state.
+        if (key.isEnabled() || altersCode) {
             if (code == Keyboard.CODE_OUTPUT_TEXT) {
                 mListener.onTextInput(key.mOutputText);
             } else if (code != Keyboard.CODE_UNSPECIFIED) {
@@ -322,10 +323,11 @@
 
     private void setReleasedKeyGraphics(Key key) {
         mDrawingProxy.dismissKeyPreview(this);
-        if (key == null || !key.isEnabled()) {
+        if (key == null) {
             return;
         }
 
+        // Even if the key is disabled, update the key release graphics just in case.
         updateReleaseKeyGraphics(key);
 
         if (key.isShift()) {
@@ -351,7 +353,14 @@
     }
 
     private void setPressedKeyGraphics(Key key) {
-        if (key == null || !key.isEnabled()) {
+        if (key == null) {
+            return;
+        }
+
+        // Even if the key is disabled, it should respond if it is in the altCodeWhileTyping state.
+        final boolean altersCode = key.altCodeWhileTyping() && mTimerProxy.isTypingState();
+        final boolean needsToUpdateGraphics = key.isEnabled() || altersCode;
+        if (!needsToUpdateGraphics) {
             return;
         }