diff --git a/release/scripts/presets/keyconfig/keymap_data/blender_default.py b/release/scripts/presets/keyconfig/keymap_data/blender_default.py
index 637580364dc..63a68507a5d 100644
--- a/release/scripts/presets/keyconfig/keymap_data/blender_default.py
+++ b/release/scripts/presets/keyconfig/keymap_data/blender_default.py
@@ -3478,7 +3478,8 @@ def km_animation_channels(params):
         # Selection.
         *_template_items_select_actions(params, "anim.channels_select_all"),
         ("anim.channels_select_box", {"type": 'B', "value": 'PRESS'}, None),
-        ("anim.channels_select_box", {"type": 'LEFTMOUSE', "value": 'CLICK_DRAG'}, None),
+        ("anim.channels_select_box", {"type": 'LEFTMOUSE', "value": 'CLICK_DRAG'}, 
+         {"properties": [("extend", False)]}),
         ("anim.channels_select_box", {"type": 'LEFTMOUSE', "value": 'CLICK_DRAG', "shift": True},
          {"properties": [("extend", True)]}),
         ("anim.channels_select_box", {"type": 'LEFTMOUSE', "value": 'CLICK_DRAG', "ctrl": True},
diff --git a/source/blender/editors/animation/anim_channels_edit.c b/source/blender/editors/animation/anim_channels_edit.c
index 7ec701edcb8..e1dc46a8a72 100644
--- a/source/blender/editors/animation/anim_channels_edit.c
+++ b/source/blender/editors/animation/anim_channels_edit.c
@@ -3499,7 +3499,8 @@ static int animchannels_mouseclick_invoke(bContext *C, wmOperator *op, const wmE
   /* set notifier that things have changed */
   WM_event_add_notifier(C, NC_ANIMATION | notifierFlags, NULL);
 
-  return OPERATOR_FINISHED;
+  return WM_operator_flag_only_pass_through_on_press(OPERATOR_FINISHED | OPERATOR_PASS_THROUGH,
+                                                     event);
 }
 
 static void ANIM_OT_channels_click(wmOperatorType *ot)