Index: app/models/issue.rb =================================================================== diff --git a/app/models/issue.rb b/app/models/issue.rb --- a/app/models/issue.rb (revision ec859e41d689ee3432113c3bd74ba48d060c9a2f) +++ b/app/models/issue.rb (date 1640777418920) @@ -975,7 +975,7 @@ return [] if project.nil? users = project.assignable_users(tracker).to_a - users << author if author && author.active? + users << author if author && author.active? && project.users.include?(author) if assigned_to_id_was.present? && assignee = Principal.find_by_id(assigned_to_id_was) users << assignee end