RemoveCellComment method seems doesn't work in my excel workbook

[a0y1a]

Above is my excel screenshot with comments， there is only one cell. I use RemoveCellComment method to clear cell comment.
Then I validated cell value, found it is not a phone number, so I add a new comment on the cell, below is my code:
item.Cell.CellComment = drawing.CreateCellComment(new XSSFClientAnchor(0, 0, 0, 0, column + 2, row, column + 3, row + 3));
item.Cell.CellComment.String = new XSSFRichTextString(item.ErrorText);
I saved workbook to excel and opened it， found the comment displayed effect is same as the first picture.
I opened excel and remove cell comment manually, and repeated the above steps，the comment displayed normal as below:

I don't know what's wrong. Is there a problem with my usage? Below is my excel.
b.xlsx

[Bykiev]

Hi, I've tried to reproduce the issue with master branch and all is working as expected. Which version of NPOI are you using?

Are you using SXSSFWorkbook? It's a bug in POI and RemoveCellComment doesn't actually remove it

[Bykiev]

@a0y1a, the issue with cell comments in SXSSF was fixed in #1136
Can you please confirm if your issue is resolved?