1830091 - Selection stops working when selecting past an link containing an svg document containing a `<use>` referencing another svg present inline in the same document

Status: RESOLVED DUPLICATE of bug 1223203

(Core :: DOM: Selection, defect)

Description

[Paul Adenot (:padenot)]

Found by :mhoye, attached is a reduced test case.

STR:

• Open the test case.
• Start selecting from somewhere in AAAAA, extend the selection so that it spans past the first svg icon

Expected:

• The selection continues

Actual:

• The selection interaction is broken, even e.g. moving the mouse pointer back into AAAAA doesn't change the selection.

The original bug was found on https://www.metafilter.com/199079/What-was-that-about-the-ship-of-Theseus, but apparently only reproduces while logged in.

Comment 1

[Paul Adenot (:padenot)]

Attachment: 1830091.html, minimized test case

Comment 2

[Paul Adenot (:padenot)]

In a debug build:

[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517
[Child 2754550, Main Thread] WARNING: '!parent', file /home/padenot/src/trees/mozilla-unified/dom/base/ContentIterator.cpp:517

That's https://searchfox.org/mozilla-central/source/dom/base/ContentIterator.cpp#517

Comment 3

[Paul Adenot (:padenot)]

https://pernos.co/debug/FOncJw6Kl3WKHU1Y38p8Iw/index.html is a recording of the STR.