TypeCellOS / TypeCellOS/BlockNote

Table Cell Merge Bug - Extra Column Appears When Merging All Cells

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bug:P4
Dominant language
TypeScript
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Avg merge
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Merged PRs (30d)
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Description

Describe the bug
When attempting to merge all cells in a table within the editor library, an unexpected extra column appears instead of creating a single merged cell.

To Reproduce
Steps to Reproduce:

1. Create a table with multiple rows and columns in the editor

2. Select all cells in the table

3. Use the "Merge Cells" function

4. Observe the result

Expected Behavior:
All selected cells should merge into one single cell spanning the entire table area.

Actual Behavior:
Instead of a single merged cell, the table gains an extra column and cells are not properly merged.

Misc

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Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the issue by creating a multi-row, multi-column table, selecting every cell, and using the “Merge Cells” function. Start at the table-cell merge entry point and trace why an extra column is created. Done means all selected cells become one cell spanning the full table area without an added column.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
45/100

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