Can't read some cells of the file when using load()

[BenoitFalys]

Hi, I was getting errors when reading some files, so I tried the HelloQXlnt. It seems that there is a bug when trying to read copied function cells. I'm on Windows 10. This is the simple code I used and the Excel file :
example.xlsx

[j2doll]

I found the error to occur in the following part:

<f ca="1">RAND()</f>

This seems to be the difference in how xlnt handles ecma376.