# Perspective - Unexpected problem unregistering listener from session event bus

**URL:** <https://forum.inductiveautomation.com/t/perspective-unexpected-problem-unregistering-listener-from-session-event-bus/39636>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [October 13, 2020, 2:01pm UTC](https://forum.inductiveautomation.com/t/perspective-unexpected-problem-unregistering-listener-from-session-event-bus/39636 "2020-10-13T14:01:30Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![ShaneH](https://avatars.discourse-cdn.com/v4/letter/s/3e96dc/32.png) [@ShaneH](https://forum.inductiveautomation.com/u/ShaneH)\
**Post date:** [March 10, 2021, 9:31pm UTC](https://forum.inductiveautomation.com/t/perspective-unexpected-problem-unregistering-listener-from-session-event-bus/39636/3 "2021-03-10T21:31:44Z")

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I had this same issue, with a binding that had multiple references to the same tag.  
Reorganizing the binding expression to only reference the tag once seemed to have made the problem go away.

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