Missing FormControl Button

I have an .xlsm file that contains a macro tied to a button.

If I run the following:

const xlsx = require('xlsx');

const workbook = xlsx.readFile('./test.xlsm', { bookVBA: true });
xlsx.writeFile(workbook, './test_saved.xlsm');

and open test_saved.xlsm, the button is missing. The macro is still available but the button is gone.

Some simple steps to reproduce (in Office 2019)

1. Create a blank workbook
2. Add a button via Developer tab -> Insert. Click the button icon under Form Controls
3. Record whatever macro you want when you add the button
4. Save file as test.xlsm
5. Run the code above
6. Open test_saved.xlsm

I’d upload my test.xlsm if I could.

[SheetJSDev]

email the file to [e-mail]

[SheetJSDev]

There are two types of controls in Excel:

• “ActiveX controls” are stored in the VBA blob and can be round-tripped by setting the bookVBA option on read and write

• “Form controls” are stored elsewhere and are currently supported in our Pro builds but not in the open source