Bug 257745 – Pressing Backspace or Delete within a contenteditable="true" summary removes all content

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: HTML Editing

Created attachment 466602 [details]
Video demonstration of pressing Backspace in the <summary> tag in Safari.

Pressing Backspace or Delete within <summary> tag removes all the content in Safari. Chrome and Firefox removes a single character as expected.

Example: https://glitch.com/edit/#!/prosemirror-safari-backspace-bug

[Andrew Herron]

The problem tag name makes it quite difficult to search for a duplicate.

Confirmed by various members of our team on:
Version 16.3 (18614.4.6.1.6)
Version 16.5 (18615.2.9.11.4)
Version 16.6 (18615.3.5.11.2)
STP Release 171 (Safari 16.4, WebKit 18616.1.15)

I'll test the new version 17 when I get a chance to install the dev beta on my machine (but I assume that's basically the same as STP).

[Andrew Herron]

This is holding up a TinyMCE release, we're just going to have to list it as a known issue

[Andrew Herron]

Better replication case, using pure ContentEditable instead of prosemirror:
https://codepen.io/tinymce/pen/wvQveOX?editors=1000

[Ryosuke Niwa]

Is this a regression? Or the problem reproduces in older versions of Safari as well as newer versions?

[Andrew Herron]

I'm not sure if we have any easily available older OS versions, I'll start grabbing some archives and see if I can track it down.

[Andrew Herron]

bisect-builds is telling me `No archives found` for both mac-ventura configurations 🤔

We found an old mac running 10.15.7, Safari Version 15.5 (15613.2.7.1.9, 15613) and it does replicate there. So probably not a regression - we just hadn't tested our new feature well enough.

[Andrew Herron]

Our engineers found an interesting workaround, wrapping the contents of the <summary> tag in a span before deleting with execCommmand:
https://codepen.io/spocke78/pen/vYQYWoJ?editors=1010

So we're implementing that for our release:
https://github.com/tinymce/tinymce/pull/8803

[Radar WebKit Bug Importer]

<rdar://problem/110707639>

[Tim Nguyen (:ntim)]

Fixed by bug 157323

*** This bug has been marked as a duplicate of bug 157323 ***