diff --git a/CHANGELOG.md b/CHANGELOG.md
index be38e3f..5fcad13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - Shortcuts starting with Ctrl + Shift. This includes the remaining default terminal
     panel shortcuts such as 'Copy' (Ctrl+Shift+C) and 'New Terminal' (Ctrl+Shift+T).
 - Target Godot version from 3.3.2-stable -> 3.4.4-stable.
+- Prevent scrollback buffer reset (i.e. scrolling to the bottom of terminal output) when
+  pressing modifier keys in isolation or when copying text using the shortcut Ctrl+Shift+C.
 
 ### Removed
 - Removed custom TerminalSettings Resource type.
diff --git a/addons/godot_xterm/terminal.gd b/addons/godot_xterm/terminal.gd
index 49503ae..3868031 100644
--- a/addons/godot_xterm/terminal.gd
+++ b/addons/godot_xterm/terminal.gd
@@ -175,8 +175,14 @@ func _refresh():
 func _gui_input(event):
 	_native_terminal._gui_input(event)
 
-	if event is InputEventKey:
-		_native_terminal.sb_reset()  # Return to bottom of scrollback buffer if we scrolled up.
+	if event is InputEventKey and event.pressed:
+		# Return to bottom of scrollback buffer if we scrolled up. Ignore modifier
+		# keys pressed in isolation or if Ctrl+Shift modifier keys are pressed.
+		if (
+			not event.scancode in [KEY_ALT, KEY_SHIFT, KEY_CONTROL, KEY_META, KEY_MASK_CMD]
+			and not (event.control and event.shift)
+		):
+			_native_terminal.sb_reset()
 
 	_handle_mouse_wheel(event)
 	_handle_selection(event)