[wp-trac] [WordPress Trac] #54752: `load-styles.php` stylesheet not properly added in the editor

[WordPress Trac]

#54752: `load-styles.php` stylesheet not properly added in the editor
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 Reporter:  walbo              |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  5.9
Component:  Editor             |     Version:  trunk
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
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Comment (by walbo):

 Thanks for testing @hellofromTonya

 Have done some more testing (5.9-RC1-52550) and here is my findings:

 - It happends every time the preview of a block is loaded. (It's triggered
 in the button block view because of the styles preview, but I can trigger
 the warning in the block inserter when I hover a block that has a preview)
 - It only happends when `SCRIPT_DEBUG` is set to `false`.
 - It happens in both block and non-block thems (tested TT2, TT1 and a
 custom block theme)

 It happens in core, but can't reproduce it with Gutenberg (12.3.1)
 activated, so may already be fixed there. I can do some more testing
 tomorrow to see if I can find the commit that fixed in there.

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Ticket URL: <https://core.trac.wordpress.org/ticket/54752#comment:3>
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