Redmine 3.4 cannot update issue

[niallfleming]

ActiveRecord::StatementInvalid (Mysql2::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where id = 58682' at line 1: update issues set position = where id = 58682):
plugins/redmine_backlogs/lib/backlogs_activerecord_mixin.rb:170:in list_commit' plugins/redmine_backlogs/lib/backlogs_activerecord_mixin.rb:83:in move_to_top'
plugins/redmine_backlogs/lib/backlogs_issue_patch.rb:165:in backlogs_before_save' app/models/issue.rb:212:in create_or_update'
app/controllers/issues_controller.rb:558:in block in save_issue_with_child_records' app/controllers/issues_controller.rb:546:in save_issue_with_child_records'
app/controllers/issues_controller.rb:168:in update' lib/redmine/sudo_mode.rb:63:in sudo_mode'

Any thoughts? not sure why it's not getting the position value?

Tried with your version, and @TheMagician1 's version, with ~sugitk 's patch