Open
Bug 1598952
Opened 5 years ago
Updated 2 years ago
DOM mutation breakpoints do not work in Web Components.
Categories
(DevTools :: Debugger, defect, P3)
DevTools
Debugger
Tracking
(Not tracked)
NEW
People
(Reporter: emilio, Unassigned)
References
(Blocks 2 open bugs)
Details
Attachments
(1 file, 1 obsolete file)
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214 bytes,
text/html
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Details |
Because of this check, which doesn't pass for nodes in a shadow tree.
Bug 1575688 would allow that check to be changed isConnected (as nsIMutationObserver does fire for shadow tree mutations), and thus for shadow root to work.
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Comment 1•5 years ago
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Thanks for the report Emilio!
Can you please provide a simple test case that can be used to reproduce (and later verify) the issue?
Thanks,
Honza
Flags: needinfo?(emilio)
Priority: -- → P3
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Reporter | |
Comment 2•5 years ago
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Sure, sorry :)
You can't attach mutation breakpoints in the shadow content.
Flags: needinfo?(emilio)
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Reporter | |
Comment 3•5 years ago
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Whoops. This one does repro the issue.
Attachment #9112297 -
Attachment is obsolete: true
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Comment 4•5 years ago
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Thanks for the test case!
Here are STRs
- Load http://janodvarko.cz/tests/bugzilla/1598952/
- Open DevTools and select the Inspector panel
- Right click on the <body> element and pick
Break on -> Subtree modification, you should see a blue marker at the left side - Right click on the <em> element (body->div->shadow-root->div->em) and pick
Break on -> Subtree modification, you should see a blue marker at the left side. It isn't there -> BUG
Honza
Has STR: --- → yes
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Updated•5 years ago
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Blocks: devtools-webcomponents
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Updated•2 years ago
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Severity: normal normal → S3 S3
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Description
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