[wp-trac] [WordPress Trac] #45882: REST Block Renderer: Fails when using the Advanced > Additional CSS Class functionality

[WordPress Trac]

#45882: REST Block Renderer: Fails when using the Advanced > Additional CSS Class
functionality
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 Reporter:  akirk         |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Future Release
Component:  Editor        |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  rest-api
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Comment (by phpbits):

 Custom attributes added via `blocks.registerBlockType` JS filter are
 having the same error. JS filters should communicate to PHP displays or
 add similar filters for server side rendering. Thanks!

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Ticket URL: <https://core.trac.wordpress.org/ticket/45882#comment:9>
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