In python-docx, attempting to delete a column from a simple table (created via python-docx itself) causes cell misalignment or destruction of the table structure.

Environment:

• No merged cells
• No nested elements
• Uniform number of columns in all rows
• Tables created with docx.Document().add_table()

Steps to reproduce:

1. Create a 5-column table
2. Populate with plain text
3. Attempt to remove column 3 using:
   row._tr.remove(row.cells[2]._tc)

Result:

• Table becomes malformed
• Some rows have fewer cells
• In MS Word, rendering is broken

Expected:

• Clean removal of the column with remaining structure preserved

This seems to be a long-standing limitation, but it now affects even simple programmatically generated documents. Please consider addressing this bug or documenting a safe workaround.