From 04512cbc6d3cacc85bed3d8b12c6d75c006cb1ad Mon Sep 17 00:00:00 2001
From: water <672684719@qq.com>
Date: Tue, 11 Aug 2026 16:46:52 +0800
Subject: [PATCH] fix: prevent duplicate character when typing on selected
 blocks

---
 src/components/modules/blockSelection.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/components/modules/blockSelection.ts b/src/components/modules/blockSelection.ts
index a6edcb8c8..d78a07562 100644
--- a/src/components/modules/blockSelection.ts
+++ b/src/components/modules/blockSelection.ts
@@ -239,6 +239,9 @@ export default class BlockSelection extends Module {
      * remove selected blocks and insert pressed key
      */
     if (this.anyBlockSelected && isKeyboard && isPrintableKey && !SelectionUtils.isSelectionExists) {
+      /** Prevent browser from also inserting the character (which would result in a double character) */
+      (reason as KeyboardEvent).preventDefault();
+
       const indexToInsert = BlockManager.removeSelectedBlocks();
 
       BlockManager.insertDefaultBlockAtIndex(indexToInsert, true);