Discrepancy in hoisting text attributes to elements (to selection attributes)

[Reinmar]

📝 Provide a description of the improvement

Screen.Recording.2025-04-25.at.08.37.02.mov

Typing over:

<p><b>foo</b></p>
<p>[]</p>
<p><b>foo</b></p>

will behave differently depending on how this content was generated.

If it was generated by applying bold to the first paragraph and then using Enter key to create two more, the second one, even when empty, will preserve this attribute in a form of selection:bold on paragraph.

However, if bold is applied to 3 paragraphs <p>foo</p><p></p><p>foo</p> then the second one won't be styled.

📃 Other details

• Browser: …
• OS: …
• CKEditor version: …
• Installed CKEditor plugins: …

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[Reinmar]

Related to #12379.

[Reinmar]

Related to #10517.

[Reinmar]

Another one that would need to be fixed: #17152.

[arkflpc]

Research ticket: #19664.