diff --git a/extraterm/src/render_process/emulator/Term.ts b/extraterm/src/render_process/emulator/Term.ts
index 5af856ca5..db9f69073 100644
--- a/extraterm/src/render_process/emulator/Term.ts
+++ b/extraterm/src/render_process/emulator/Term.ts
@@ -2190,6 +2190,11 @@ export class Emulator implements EmulatorApi {
     const isMac = platform === "darwin";
     let key: string = null;
 
+    if (ev.isComposing) {
+      // Electron on macOS reports key events even when the IME menu is shown.
+      return null;
+    }
+
     let altKey = ev.altKey;
     let ctrlKey = ev.ctrlKey;
     
diff --git a/extraterm/src/render_process/keybindings/KeyBindingsManager.ts b/extraterm/src/render_process/keybindings/KeyBindingsManager.ts
index 0343a7ad7..348a9d893 100644
--- a/extraterm/src/render_process/keybindings/KeyBindingsManager.ts
+++ b/extraterm/src/render_process/keybindings/KeyBindingsManager.ts
@@ -35,7 +35,8 @@ export class Keybinding implements TermMinimalKeyboardEvent {
   readonly configKey: string;
   readonly configKeyLowercase: string;
   private _humanReadableString: string = null;
-
+  readonly isComposing: boolean = false;
+  
   constructor(options: KeybindingOptions) {
     this.altKey = options.altKey;
     this.ctrlKey = options.ctrlKey;
diff --git a/extraterm/src/render_process/keybindings/KeyBindingsManagerTest.ts b/extraterm/src/render_process/keybindings/KeyBindingsManagerTest.ts
index 61154214b..00a174970 100644
--- a/extraterm/src/render_process/keybindings/KeyBindingsManagerTest.ts
+++ b/extraterm/src/render_process/keybindings/KeyBindingsManagerTest.ts
@@ -62,27 +62,27 @@ export function testMapEventToCommand(test: nodeunit.Test): void {
   const cutsContexts = KeybindingsManager.loadKeybindingsFromObject(keyBindingsMap, "linux");
   const editorKeybindings = cutsContexts.context("editor");
 
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: "o", keyCode: keyCode("o") }), "open");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: " ", keyCode: keyCode(" ") }), "togglemode");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: "+", keyCode: keyCode("+") }), "zoom");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: true, ctrlKey: false, metaKey: true, shiftKey: true, key: "A", keyCode: keyCode("A",false) }), "all");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: " ", keyCode: keyCode(" ",false) }), "makespace");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: true, ctrlKey: false, metaKey: false, shiftKey: true, key: "S", keyCode: keyCode("S",false) }), "smeg");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: true, metaKey: false, shiftKey: true, key: "W", keyCode: keyCode("W") }), "closewindow");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: true, key: "Z", keyCode: keyCode("Z",false) }), "sleep");  
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "PageUp", keyCode: keyCode("PageUp",false) }), "pageup");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "Home", keyCode: keyCode("Home",false) }), "gohome");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "Home", keyCode: keyCode("Home",false) }), "gohome");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: true, ctrlKey: false, metaKey: false, shiftKey: false, key: "Tab", keyCode: keyCode("Tab",false) }), "dedent");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "End", keyCode: keyCode("End",false) }), "finish");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "ArrowUp", keyCode: keyCode("ArrowUp",false) }), "up");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "ArrowDown", keyCode: keyCode("ArrowDown",false) }), "down");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "F2", keyCode: keyCode("F2",false) }), "rename");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: true, ctrlKey: false, metaKey: false, shiftKey: false, key: "ArrowLeft", keyCode: keyCode("ArrowLeft",false) }), "select-left");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: "Tab", keyCode: 9 }), "otherpane");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: "c", keyCode: 67 }), "break");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: false, ctrlKey: true, metaKey: false, shiftKey: true, key: "C", keyCode: 67 }), "bigbreak");
-  test.equal(editorKeybindings.mapEventToCommand({ altKey: true, ctrlKey: true, metaKey: false, shiftKey: false, key: ".", keyCode: 190 }), "moveTabRight");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: "o", keyCode: keyCode("o") }), "open");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: " ", keyCode: keyCode(" ") }), "togglemode");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: "+", keyCode: keyCode("+") }), "zoom");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: true, ctrlKey: false, metaKey: true, shiftKey: true, key: "A", keyCode: keyCode("A",false) }), "all");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: " ", keyCode: keyCode(" ",false) }), "makespace");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: true, ctrlKey: false, metaKey: false, shiftKey: true, key: "S", keyCode: keyCode("S",false) }), "smeg");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: true, metaKey: false, shiftKey: true, key: "W", keyCode: keyCode("W") }), "closewindow");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: true, key: "Z", keyCode: keyCode("Z",false) }), "sleep");  
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "PageUp", keyCode: keyCode("PageUp",false) }), "pageup");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "Home", keyCode: keyCode("Home",false) }), "gohome");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "Home", keyCode: keyCode("Home",false) }), "gohome");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: true, ctrlKey: false, metaKey: false, shiftKey: false, key: "Tab", keyCode: keyCode("Tab",false) }), "dedent");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "End", keyCode: keyCode("End",false) }), "finish");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "ArrowUp", keyCode: keyCode("ArrowUp",false) }), "up");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "ArrowDown", keyCode: keyCode("ArrowDown",false) }), "down");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: false, metaKey: false, shiftKey: false, key: "F2", keyCode: keyCode("F2",false) }), "rename");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: true, ctrlKey: false, metaKey: false, shiftKey: false, key: "ArrowLeft", keyCode: keyCode("ArrowLeft",false) }), "select-left");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: "Tab", keyCode: 9 }), "otherpane");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: true, metaKey: false, shiftKey: false, key: "c", keyCode: 67 }), "break");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: false, ctrlKey: true, metaKey: false, shiftKey: true, key: "C", keyCode: 67 }), "bigbreak");
+  test.equal(editorKeybindings.mapEventToCommand({ isComposing: false, altKey: true, ctrlKey: true, metaKey: false, shiftKey: false, key: ".", keyCode: 190 }), "moveTabRight");
   
   test.done();
 }
diff --git a/extraterm/src/typings/extra_lib.d.ts b/extraterm/src/typings/extra_lib.d.ts
index 9941495ab..50de20a64 100644
--- a/extraterm/src/typings/extra_lib.d.ts
+++ b/extraterm/src/typings/extra_lib.d.ts
@@ -92,6 +92,10 @@ interface KeyboardEventInit {
   which?: number;
 }
 
+interface KeyboardEvent {
+  isComposing: boolean;
+}
+
 interface Event {
   path: Node[]; // <- obsolete. Removed from later the Shadow DOM spec.
   encapsulated: boolean;
diff --git a/packages/term-api/src/TermApi.ts b/packages/term-api/src/TermApi.ts
index 5103cd08a..37ae3d5cf 100644
--- a/packages/term-api/src/TermApi.ts
+++ b/packages/term-api/src/TermApi.ts
@@ -173,6 +173,7 @@ export interface MinimalKeyboardEvent {
   metaKey: boolean;
   shiftKey: boolean;
   key: string;
+  isComposing: boolean;
 }