Ckeditor5: Shift + Return not works for Heading 1-3 if Title plugin is installed and an space is and end of Heading

[MCMicS]

📝 Provide detailed reproduction steps (if any)

1. Create Editor with Title plugin
2. Open sample/index.html
3. Enter H1 as Heading 1
4. Type Space and then Shift+Return
   5, Type 'Hello'

✔️ Expected result

Hello is shown in Editor

❌ Actual result

Nothing is shown. No further text can be entered
see gif:

📃 Other details

• Browser: Firefox, Chrome
• OS: …
• CKEditor version: 22.0.0
• Installed CKEditor plugins: Heading, Title, ...

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Tested with Build created from Online Builder and only Add Title Plugin.
Attached both versions.
If the space is removed before Shift+Return it works

Maybe because the h1-h3 is handled special in
https://github.com/ckeditor/ckeditor5/blob/5fe1d6394bbaf4aaf7285c64401296cb58642018/packages/ckeditor5-heading/src/title.js#L94-L96

ckeditor5_22.0.0_withTitle.zip
ckeditor5_22.0.0.zip

If you'd like to see this fixed sooner, add a 👍 reaction to this post.

[Mgsy]

Hi, thanks for the report! I can confirm this issue. It's not a fresh regression, as I can reproduce it on version 20.0.0.

[MCMicS]

I first saw this with 16.0.0 and hopes itwas fixed after update to 22.0.0

But this wasnt so I report it

[Reinmar]

It sounds like this is related to the typing package. May be resolved by the work on migration to beforeInput.