Pylightxl Version: 1.60
Python Version: 3.9.14

Code to reproduce the problem:

import pylightxl

path = 'test_sheet.xlsx'
db = pylightxl.readxl(fn=path)
print(db.ws_names)

The output is:

["'#3969'", '#3969']

However the file contains only 1 sheet named #3969.
The weird thing is that if I rename the sheet to sheet for example, save it in LibreOffice (see the attached test_sheet_rename.xlsx), then I get from the above code what is expected: ws_names return only 1 sheet named sheet.

test_sheet.xlsx
test_sheet_rename.xlsx