[wp-trac] [WordPress Trac] #39576: Admin - Tag autocomplete not work - WP >= 4.7

[WordPress Trac]

#39576: Admin - Tag autocomplete not work - WP >= 4.7
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 Reporter:  mgermani                 |       Owner:
     Type:  defect (bug)             |      Status:  new
 Priority:  normal                   |   Milestone:  4.7.2
Component:  Taxonomy                 |     Version:  4.7
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:
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Comment (by mgermani):

 I did some tests with clean Wordpress version and this bug is not present
 with default theme. The problem is encountered when install some custom
 themes like this:
 - MediCenter - Responsive Medical WordPress Theme
 (https://themeforest.net/item/medicenter-responsive-medical-wordpress-
 theme/4718613)
 - FlatMagazione (themeforest)
 Chrome Js console report this error with this message: "Uncaught
 TypeError: this._each is not a function" into prototype.js?ver=1.7.1:847

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Ticket URL: <https://core.trac.wordpress.org/ticket/39576#comment:5>
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