From 929f6202a446ab0f43e1944f6789dde68d7658d6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nguy=E1=BB=85n=20Huy=20Ho=C3=A0ng?=
 <hoangnguyen.hn212.hn@gmail.com>
Date: Thu, 23 Apr 2026 20:30:18 +0700
Subject: [PATCH] fix: bug where selection layer leaves a ghost residual line
 below wrapped lines after deselecting (#432)

Co-authored-by: hoangnh290 <hoangnh290@viettel.com.vn>
---
 src-web/components/core/Editor/Editor.css | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src-web/components/core/Editor/Editor.css b/src-web/components/core/Editor/Editor.css
index 6b80aa03..5143aca6 100644
--- a/src-web/components/core/Editor/Editor.css
+++ b/src-web/components/core/Editor/Editor.css
@@ -67,6 +67,13 @@
       @apply bg-selection !important;
     }
 
+    /* Fix WebKit/WKWebView rendering bug where selection layer leaves a ghost
+       residual line below wrapped lines after deselecting (CodeMirror issue #1600, #1627).
+       The layer div must be hidden when empty to force a repaint. */
+    .cm-selectionLayer:empty {
+      display: none;
+    }
+
     /* Style gutters */
 
     .cm-gutters {