Can't send PDF as attachment with Adobe Reader Internet Explorer Plugin

Hi

We have Adobe Reader Plugin activated in Internet Explorer 11 to open PDF files directly in Internet Explorer:

we have now the problem that sending pdf as attachment is no more working:

After click on "Next" nothing happens...

If we disable the Adobe Reader Addon for Internet Explorer the PDF file opens in Adobe Reader and that is working fine (send as attachment works). But not in Internet Explorer with Adobe Reader Plugin.

We already updated to the new version 2019.009.20074