[wp-trac] [WordPress Trac] #47976: HTML attributes in uppercase show error in widgets

[WordPress Trac]

#47976: HTML attributes in uppercase show error in widgets
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 Reporter:  sudhir600                     |       Owner:  (none)
     Type:  enhancement                   |      Status:  new
 Priority:  normal                        |   Milestone:  Awaiting Review
Component:  Widgets                       |     Version:
 Severity:  normal                        |  Resolution:
 Keywords:  has-screenshots dev-feedback  |     Focuses:  administration
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Comment (by FlorianBrinkmann):

 I am having the same issue: I tried to add an SVG with the `viewBox`
 attribute, but am not able to save it because of the »error«.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47976#comment:2>
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