[wp-trac] [WordPress Trac] #43113: Multiple custom item classes are returned as single string when using 'nav_menu_link_attributes' filter with Customizer preview

[WordPress Trac]

#43113: Multiple custom item classes are returned as single string when using
'nav_menu_link_attributes' filter with Customizer preview
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 Reporter:  lrdn                             |       Owner:  noisysocks
     Type:  defect (bug)                     |      Status:  reviewing
 Priority:  normal                           |   Milestone:  5.6
Component:  Customize                        |     Version:  4.3
 Severity:  normal                           |  Resolution:
 Keywords:  has-patch has-unit-tests commit  |     Focuses:
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Comment (by noisysocks):

 Thanks @dlh. Switched to `is_scalar()` in [attachment:"43113.4.diff"].

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Ticket URL: <https://core.trac.wordpress.org/ticket/43113#comment:10>
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