# Possible Bug Related to Groups

**URL:** <https://discourse.nodered.org/t/possible-bug-related-to-groups/32966>\
**Category:** General\
**Created:** [16 September 2020 17:09 UTC](https://discourse.nodered.org/t/possible-bug-related-to-groups/32966 "2020-09-16T17:09:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dudleyjosh](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dudleyjosh/32/105799_2.png) [@dudleyjosh](https://discourse.nodered.org/u/dudleyjosh)\
**Post date:** [16 September 2020 17:09 UTC](https://discourse.nodered.org/t/possible-bug-related-to-groups/32966/1 "2020-09-16T17:09:34Z")

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I've found that if I copy & paste a node within a group, it locks up the Node-RED UI.

I'm using the latest version of Chrome on macOS... has any one else experienced this?

I get the following in the console if I copy and paste a node within a group and then attempt to move that group on the screen.

```auto
TypeError: Cannot read property 'addChild' of undefined
    at x (red.min.js:16)
    at Object.emit (red.min.js:16)
    at Object.y [as addToGroup] (red.min.js:16)
    at SVGGElement.$e (red.min.js:16)
    at SVGGElement.i [as __onmouseup] (vendor.js:35)
emit @ red.min.js:16
y @ red.min.js:16
$e @ red.min.js:16
i @ vendor.js:35

```

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<div class="post-metadata">

**Author:** ![knolleary](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/knolleary/32/3_2.png) [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Post date:** [16 September 2020 18:06 UTC](https://discourse.nodered.org/t/possible-bug-related-to-groups/32966/2 "2020-09-16T18:06:53Z")

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Thanks - already reported and fixed for the next release.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [15 November 2020 18:07 UTC](https://discourse.nodered.org/t/possible-bug-related-to-groups/32966/3 "2020-11-15T18:07:04Z")

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