diff --git a/kitty/layout/vertical.py b/kitty/layout/vertical.py
index bcc3045fe..bcd395788 100644
--- a/kitty/layout/vertical.py
+++ b/kitty/layout/vertical.py
@@ -50,7 +50,7 @@ def borders(
         color = BorderColor.inactive
         if needs_borders_map.get(wg.id):
             color = BorderColor.active if wg is active_group else BorderColor.bell
-        borders.append(BorderLine(e1, color, wg.active_window_id))
+        borders.append(BorderLine(e1, color, -wg.active_window_id))
         borders.append(BorderLine(e2, color, wg.active_window_id))
 
     last_idx = len(borders) - 1 - end_offset
diff --git a/kitty/mouse.c b/kitty/mouse.c
index 0ef2e791c..3a6a16707 100644
--- a/kitty/mouse.c
+++ b/kitty/mouse.c
@@ -1212,11 +1212,13 @@ mouse_event(const int button, int modifiers, int action) {
     if (global_state.active_drag_resize) {
         if (button < 0) {
             call_boss(drag_resize_update, "dd", osw->mouse_x, osw->mouse_y);
+            debug("drag resize updated\n");
         } else if (button == GLFW_MOUSE_BUTTON_LEFT && action == GLFW_RELEASE) {
             call_boss(drag_resize_end, "");
             global_state.active_drag_resize = 0;
             mouse_cursor_shape = DEFAULT_POINTER;
             set_mouse_cursor(mouse_cursor_shape);
+            debug("drag resize ended\n");
         }
         return;
     }