From 87ab41c80c05a7ef7a66478de041d3ce6863727d Mon Sep 17 00:00:00 2001
From: meinzzzz <lukas.geiselhart35@gmail.com>
Date: Tue, 23 Dec 2025 18:02:40 +0100
Subject: [PATCH] Fix shift+tab behavior in MathInputView

---
 packages/ckeditor5-math/src/ui/mathinputview.ts | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/packages/ckeditor5-math/src/ui/mathinputview.ts b/packages/ckeditor5-math/src/ui/mathinputview.ts
index a3b93f3e1..027b7aab9 100644
--- a/packages/ckeditor5-math/src/ui/mathinputview.ts
+++ b/packages/ckeditor5-math/src/ui/mathinputview.ts
@@ -203,10 +203,14 @@ export default class MathInputView extends View {
 			// Inline shortcut configuration is optional; ignore failures to avoid breaking the math field.
 		}
 		mf.addEventListener( 'keydown', ev => {
-			if ( ev.key === 'Tab' && !ev.shiftKey ) {
-				ev.preventDefault();
-				ev.stopImmediatePropagation();
-				this.latexTextAreaView.focus();
+			if ( ev.key === 'Tab' ) {
+				if ( ev.shiftKey ) {
+					ev.preventDefault();
+				} else {
+					ev.preventDefault();
+					ev.stopImmediatePropagation();
+					this.latexTextAreaView.focus();
+				}
 			}
 		}, { capture: true } );
 		mf.addEventListener( 'input', () => {