[wp-trac] [WordPress Trac] #64545: Style Engine: Harden add_declaration against being passed illegal values

[WordPress Trac]

#64545: Style Engine: Harden add_declaration against being passed illegal values
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 Reporter:  andrewserong                         |       Owner:
                                                 |  isabel_brison
     Type:  defect (bug)                         |      Status:  reopened
 Priority:  normal                               |   Milestone:  6.9.1
Component:  Editor                               |     Version:  trunk
 Severity:  normal                               |  Resolution:
 Keywords:  gutenberg-merge has-patch has-unit-  |     Focuses:
  tests dev-feedback                             |
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Comment (by jorbin):

 Where there any changes in 6.9 that would make this easier to encounter?
 If not, I would agree with @wildworks that this isn't in scope for 6.9.1.

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Ticket URL: <https://core.trac.wordpress.org/ticket/64545#comment:7>
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