[wp-trac] [WordPress Trac] #48955: WP 5.3.1 changes cause potential backwards compatibility breakage with kses

[WordPress Trac]

#48955: WP 5.3.1 changes cause potential backwards compatibility breakage with kses
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 Reporter:  iCaleb        |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Future Release
Component:  Security      |     Version:  5.3.1
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:
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Comment (by iCaleb):

 At a minimum, I think a decision needs to be made here other than
 "wontfix".

 - If enforcing a string is the decision, then let's enforce it in a way
 other than just a side effect of one specific filter.
 - If allowing an array, even if temporarily, let's specify that and have a
 clear acceptance path (along with deprecation notices if it's temporary).
 - Either way, let's get a unit test to dictate what should happen so it
 doesn't flip back and forth in the future.

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Ticket URL: <https://core.trac.wordpress.org/ticket/48955#comment:29>
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