right-click menu doesn't work with large number of issues.
Tried to move ~380 Issues at once, using the right-click menu, but that wouldn't show up. The browser gave me:
Failed to load resource: the server responded with a status of 414 (Request-URI Too Large)
Server is Apache 2.2.9.
This is probably only an issue with customized pagination steps.
I would suggest using a POST request instead to load the right-click menu.