When trying clicking the subscribe button for our calendar it gives the following:
but for some reason it has undefined in the url and obviously doesn't work, manually looking at the html it should be generating the url:
which does work fine but our users are getting frustrated at having to ask what the correct url is.
Is there any obvious reason it's doing this?
This is my initial workaround answer while I research further.
I noticed the URL is no longer "undefined" when I use the ellipses menu instead of the button.
Hopefully this will serve as a workaround while we investigate further. Please let me know if it helps at all.