[wp-trac] [WordPress Trac] #54061: Dragging multiple blocks inside columns block gives error

[WordPress Trac]

#54061: Dragging multiple blocks inside columns block gives error
--------------------------+-------------------------------------
 Reporter:  finnruijter   |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  5.8
 Severity:  normal        |   Keywords:  needs-patch 2nd-opinion
  Focuses:                |
--------------------------+-------------------------------------
 Hi there,

 I've tested this on multiple sites that use core Gutenberg. When I create
 new 'Columns' block and try to drag multiple selected blocks in it, the
 whole Gutenberg editor gives me an error.

 This is also the case in multiple WordPress sites. Everything is updated.

 TypeError: Cannot read property 'firstChild' of null
     at pp (https://devqcare.wpengine.com/wp-includes/js/dist/block-
 editor.min.js?ver=390a9f83b606a55e8b523c4d16bdb08c:12:393446)
     at https://devqcare.wpengine.com/wp-includes/js/dist/block-
 editor.min.js?ver=390a9f83b606a55e8b523c4d16bdb08c:12:394426
     at Bh (https://devqcare.wpengine.com/wp-includes/js/dist/vendor/react-
 dom.min.js?ver=16.13.1:126:456)
     at Dj (https://devqcare.wpengine.com/wp-includes/js/dist/vendor/react-
 dom.min.js?ver=16.13.1:162:476)
     at unstable_runWithPriority (https://devqcare.wpengine.com/wp-
 includes/js/dist/vendor/react.min.js?ver=16.13.1:25:260)
     at Da (https://devqcare.wpengine.com/wp-includes/js/dist/vendor/react-
 dom.min.js?ver=16.13.1:60:280)
     at xb (https://devqcare.wpengine.com/wp-includes/js/dist/vendor/react-
 dom.min.js?ver=16.13.1:162:231)
     at Te (https://devqcare.wpengine.com/wp-includes/js/dist/vendor/react-
 dom.min.js?ver=16.13.1:146:79)
     at https://devqcare.wpengine.com/wp-includes/js/dist/vendor/react-
 dom.min.js?ver=16.13.1:61:68
     at unstable_runWithPriority (https://devqcare.wpengine.com/wp-
 includes/js/dist/vendor/react.min.js?ver=16.13.1:25:260)

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Ticket URL: <https://core.trac.wordpress.org/ticket/54061>
WordPress Trac <https://core.trac.wordpress.org/>
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