The button works but it's blank. How would one put a PDF icon or say PDF in text for the button?
The issue is a known one and below you will find a link to the related item in our GitHub repository:
As you will see in the issue, it has already been resolved and the fix will be available with the next release scheduled for the middle of October.
In the GitHub item, there is also a suggested workaround that you could use until the fix is available.
I hope this helps.