1 files changed, 5 insertions, 4 deletions
diff --git a/app/services/issuable/process_assignees.rb b/app/services/issuable/process_assignees.rb
index c9c6b0bed85..1ef6d3d9c42 100644
--- a/app/services/issuable/process_assignees.rb
+++ b/app/services/issuable/process_assignees.rb
@@ -14,12 +14,13 @@ module Issuable
     end
 
     def execute
-      if assignee_ids.blank?
-        updated_new_assignees = new_assignee_ids
+      updated_new_assignees = new_assignee_ids
+
+      if add_assignee_ids.blank? && remove_assignee_ids.blank?
+        updated_new_assignees = assignee_ids if assignee_ids
+      else
         updated_new_assignees |= add_assignee_ids if add_assignee_ids
         updated_new_assignees -= remove_assignee_ids if remove_assignee_ids
-      else
-        updated_new_assignees = assignee_ids
       end
 
       updated_new_assignees.uniq