1 files changed, 13 insertions, 5 deletions

diff --git a/source/blender/editors/screen/area.c b/source/blender/editors/screen/area.c
index 175efc5387b..c351ade9954 100644
--- a/source/blender/editors/screen/area.c
+++ b/source/blender/editors/screen/area.c
@@ -161,6 +161,12 @@ void ED_region_do_listen(wmRegionListenerParams *params)
   if (region->type && region->type->listener) {
     region->type->listener(params);
   }
+
+  LISTBASE_FOREACH (uiList *, list, &region->ui_lists) {
+    if (list->type && list->type->listener) {
+      list->type->listener(list, params);
+    }
+  }
 }
 
 /* only exported for WM */
@@ -1539,8 +1545,8 @@ static void region_rect_recursive(
   region->winx = BLI_rcti_size_x(&region->winrct) + 1;
   region->winy = BLI_rcti_size_y(&region->winrct) + 1;
 
-  /* if region opened normally, we store this for hide/reveal usage */
-  /* prevent rounding errors for UI_DPI_FAC mult and divide */
+  /* If region opened normally, we store this for hide/reveal usage. */
+  /* Prevent rounding errors for UI_DPI_FAC multiply and divide. */
   if (region->winx > 1) {
     region->sizex = (region->winx + 0.5f) / UI_DPI_FAC;
   }
@@ -1680,7 +1686,7 @@ static void ed_default_handlers(
 {
   BLI_assert(region ? (&region->handlers == handlers) : (&area->handlers == handlers));
 
-  /* note, add-handler checks if it already exists */
+  /* NOTE: add-handler checks if it already exists. */
 
   /* XXX it would be good to have boundbox checks for some of these... */
   if (flag & ED_KEYMAP_UI) {
@@ -2081,7 +2087,7 @@ void ED_area_data_copy(ScrArea *area_dst, ScrArea *area_src, const bool do_free)
   }
   BKE_spacedata_copylist(&area_dst->spacedata, &area_src->spacedata);
 
-  /* Note; SPACE_EMPTY is possible on new screens */
+  /* NOTE: SPACE_EMPTY is possible on new screens. */
 
   /* regions */
   if (do_free) {
@@ -3018,6 +3024,8 @@ void ED_region_panels_layout_ex(const bContext *C,
     y = -y;
   }
 
+  UI_blocklist_update_view_for_buttons(C, &region->uiblocks);
+
   if (update_tot_size) {
     /* this also changes the 'cur' */
     UI_view2d_totRect_set(v2d, x, y);
@@ -3672,7 +3680,7 @@ static void region_visible_rect_calc(ARegion *region, rcti *rect)
           /* Skip floating. */
         }
         else {
-          BLI_assert(!"Region overlap with unknown alignment");
+          BLI_assert_msg(0, "Region overlap with unknown alignment");
         }
       }
     }