From 484faaea4f314d4c598b77d56cf7fe5a167afcc0 Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Wed, 7 Nov 2018 18:09:45 +1100
Subject: [PATCH] Fix for hidden regions becoming active

---
 source/blender/editors/screen/screen_edit.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/blender/editors/screen/screen_edit.c b/source/blender/editors/screen/screen_edit.c
index f0f8cb6d9d8..ccc1d91d2e9 100644
--- a/source/blender/editors/screen/screen_edit.c
+++ b/source/blender/editors/screen/screen_edit.c
@@ -649,6 +649,9 @@ void ED_screen_set_active_region(bContext *C, wmWindow *win, const int xy[2])
 		if (sa) {
 			/* make overlap active when mouse over */
 			for (ar = sa->regionbase.first; ar; ar = ar->next) {
+				if (ar->flag & (RGN_FLAG_HIDDEN | RGN_FLAG_TOO_SMALL)) {
+					continue;
+				}
 				if (BLI_rcti_isect_pt_v(&ar->winrct, xy)) {
 					scr->active_region = ar;
 					break;