Bug: linebreak insertion breaks format inheritance

[kimseongyu]

Lexical version: 0.40.0

Steps To Reproduce

1. Type bolded "hello" in the editor
2. Move the cursor between "he" and "llo"
3. Press the Shift + Enter key twice
4. Move the cursor between the two linebreaks
5. Start Typing any character

Link to code example: playground

The current behavior

issue.mov

The expected behavior

If a user inserts linebreaks within a formatted range, those linebreaks should maintain the formatting.

Impact of fix

[kimseongyu]

Contiuous text input typically inehrits the format and style from the previous node. However, LineBreakNode extends the LexicalNode and does not support format or style properties, the formatting context is broken.

To resolve this issue, It need updating the selection logic to ensure formatting cotinuity. When the selection is positioned after a LineBreakNode, the editor find the nearest preceding node that contains format and style. Then It can makes a seamless typing when multiple linebreaks are present.

[Jynx2004]

I think the meaning of linebreak is to have a new node and not continue the format of the previous node . When you only press enter then format is maintained as no linebreak is applied but when you press shift + enter then linebreak is applied which functionally works as expected

[etrepum]

The problem here is that when you insert one linebreak the format is preserved, but if you insert two linebreaks then it isn't (because the RangeSelection loses its format along the way). The current behavior is inconsistent, the formatting should be preserved in both cases. Other editors don't lose the formatting in this situation.

Screen.Recording.2026-02-24.at.10.54.33.mov

[Jynx2004]

Will work on this issue . Thank you for clarifying @etrepum .