diff --git a/web/history.md b/web/history.md
index eeb61b9a59..40b3d3a24b 100644
--- a/web/history.md
+++ b/web/history.md
@@ -8,6 +8,7 @@
     * Centralizes code paths to improve parity between hardware and OSK-based keystrokes.
   * In both cases above, significant unit testing was facilitated and has been added as a result, further improving code maintainability into the future.
 * Began adding support for our common LMLayer interface for predictive modeling.
+* Fix for issue with Mandarin Chinese keyboard's 'picker' UI
 
 ## 2019-02-25 11.0.220 stable
 * 11.0 Stable release
diff --git a/web/source/text/kbdInterface.ts b/web/source/text/kbdInterface.ts
index d5754de151..e3dd4f5189 100644
--- a/web/source/text/kbdInterface.ts
+++ b/web/source/text/kbdInterface.ts
@@ -1138,6 +1138,9 @@ namespace com.keyman.text {
       }
     }
 
+    // Needed for some legacy CJK keyboards.
+    ['ShowPinnedHelp'] = this['showPinnedHelp'];
+
     resetContext() {
       let keyman = com.keyman.singleton;
       if(!keyman.isHeadless && keyman.osk.vkbd) {