Bug 141580

Summary:	REGRESSION (r179429): Backspace key does not work in Facebook comment fields
Product:	WebKit	Reporter:	Chris Adamson <invalidname>
Component:	WebCore Misc.	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	ap, webkit-bug-importer, ysuzuki
Priority:	P1	Keywords:	InRadar
Version:	528+ (Nightly build)
Hardware:	Mac
OS:	OS X 10.10

Description Chris Adamson 2015-02-13 16:52:17 PST

Visit Facebook (yeah, I know). Locate a post's reply block and focus on it. Start typing. Press backspace key to delete what you have typed. Nothing happens.

Comment 1 Alexey Proskuryakov 2015-02-13 22:37:32 PST

I could reproduce with nightly r180087. We need to bisect to find out what change broke this.

Comment 2 Radar WebKit Bug Importer 2015-02-13 22:37:43 PST

<rdar://problem/19837231>

Comment 3 Alexey Proskuryakov 2015-02-17 10:08:17 PST

Turns out that this regressed with http://trac.webkit.org/changeset/179429

Comment 4 Mark Rowe (bdash) 2015-02-21 01:36:12 PST


*** This bug has been marked as a duplicate of bug 141859 ***

Comment 5 Yusuke Suzuki 2015-02-21 08:06:54 PST

Oops, it's my fault. Thank you for investigating it!

After investigating the cause, it seems that, when window.Symbol is exposed, Object.getOwnPropertySymbols and the latest ES6 iterator interface are also required.

So I'm now fixing this issue by hiding window.Symbol object to user web pages.
It allow inspector to continue to use Symbol and its' already used.