Emailing PDF opened in Microsoft Outlook for Mac 2016

I am having consistent issues when trying to email a PDF that was opened from an email. I can save the PDF to a folder, and then email without issue.

I am using Microsoft Outlook for Mac 2016, and it is fully patched and updated.

I am using Adobe Acrobat Pro 2017 for Mac version 2017.011.30070

I am able to double click and open the attached PDF from an email within Outlook, but then attempting to email the open PDF, the application fails to respond and I have to force quit Adobe Acrobat.

Any guidance will be appreciated.