From 2285ac6ab8a88bdb3eb339fdd952af36f45c64e7 Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Wed, 11 Mar 2026 12:41:48 +0900
Subject: [PATCH] Fix RTL breaking IME composition rendering

Fixes #5760
---
 src/browser/input/CompositionHelper.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/browser/input/CompositionHelper.ts b/src/browser/input/CompositionHelper.ts
index d170eae3b..0f4ef7789 100644
--- a/src/browser/input/CompositionHelper.ts
+++ b/src/browser/input/CompositionHelper.ts
@@ -76,7 +76,9 @@ export class CompositionHelper {
    * @param ev The event.
    */
   public compositionupdate(ev: Pick<CompositionEvent, 'data'>): void {
-    this._compositionView.textContent = ev.data;
+    // Mark text as LTR, direction=rtl is used in CSS so the end of the text is followed for long
+    // compositions
+    this._compositionView.textContent = `\u200E${ev.data}\u200E`;
     this.updateCompositionElements();
     setTimeout(() => {
       this._compositionPosition.end = this._textarea.value.length;