From 9aa27f68c3dc7b9d6bd08bf1f3fbf58546459aa5 Mon Sep 17 00:00:00 2001
From: Quincy Morgan <quincy.morgan@icloud.com>
Date: Tue, 10 Dec 2019 10:07:05 -0500
Subject: [PATCH] Fix stale UI when undoing/redoing between single and
 multiselections (re: #7090)

---
 modules/modes/select.js | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/modules/modes/select.js b/modules/modes/select.js
index e68906bf3..382428ddc 100644
--- a/modules/modes/select.js
+++ b/modules/modes/select.js
@@ -77,10 +77,14 @@ export function modeSelect(context, selectedIDs) {
             });
         }
 
-        if (ids.length) {
-            selectedIDs = ids;
-        } else {
+        if (!ids.length) {
             context.enter(modeBrowse(context));
+        } else if ((selectedIDs.length > 1 && ids.length === 1) ||
+            (selectedIDs.length === 1 && ids.length > 1)) {
+            // switch between single- and multi-select UI
+            context.enter(modeSelect(context, ids));
+        } else {
+            selectedIDs = ids;
         }
         return !!ids.length;
     }