diff --git a/src/ETTerms/App/AboutView.cs b/src/ETTerms/App/AboutView.cs
index 5ee9ef5..1d33b78 100644
--- a/src/ETTerms/App/AboutView.cs
+++ b/src/ETTerms/App/AboutView.cs
@@ -183,6 +183,11 @@ public sealed class AboutView : UserControl
 
     private static readonly ChangelogEntry[] Changelog =
     [
+        new("0.3.3", new DateOnly(2026, 6, 16), "Bugfix — terminal input no longer dies after activity",
+        [
+            "Fixed: after the terminal had printed output (Serial or PowerShell), switching away and back — minimizing, or clicking another window — left the terminal unable to accept any typing or Enter, forcing you to reopen the session.",
+            "Cause: once enough output scrolled by, the terminal's scrollbar could steal the keyboard focus when the window regained focus. The scrollbar is now mouse-only and never takes focus, so input keeps working.",
+        ]),
         new("0.3.2", new DateOnly(2026, 6, 11), "New Status page — control PDU outlets with buttons",
         [
             "New Status page (the ⚡ icon on the left) with a PDU tab — connect to your PDU by IP and see every outlet at a glance.",
diff --git a/src/ETTerms/ETTerms.csproj b/src/ETTerms/ETTerms.csproj
index 104b812..ec62a04 100644
--- a/src/ETTerms/ETTerms.csproj
+++ b/src/ETTerms/ETTerms.csproj
@@ -10,7 +10,7 @@
     <AssemblyName>ETTerms</AssemblyName>
 
     <!-- 版本資訊 -->
-    <Version>0.3.2</Version>
+    <Version>0.3.3</Version>
     <Product>ETTerms</Product>
     <Company>ETTerms Project</Company>
 
diff --git a/src/ETTerms/Terminal/DarkScrollBar.cs b/src/ETTerms/Terminal/DarkScrollBar.cs
index c72a19d..f35f696 100644
--- a/src/ETTerms/Terminal/DarkScrollBar.cs
+++ b/src/ETTerms/Terminal/DarkScrollBar.cs
@@ -39,6 +39,11 @@ public sealed class DarkScrollBar : Control
     {
         SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint
                | ControlStyles.OptimizedDoubleBuffer | ControlStyles.ResizeRedraw, true);
+        // 純滑鼠操作的捲軸，無任何鍵盤邏輯，絕不可吃鍵盤焦點：否則身為唯一可選取子控制項，
+        // 在 scrollback 出現（Enabled=true）後，視窗切走再切回時 WinForms 會把焦點還原到它身上，
+        // 導致 TerminalView 收不到鍵盤輸入（打字 / Enter 全失效），需重開 session 才恢復。
+        SetStyle(ControlStyles.Selectable, false);
+        TabStop = false;
         Width = 12;
         BackColor = TrackColor;
     }