Solved: Download GPGMail 1.4.1 from https://www.gpgtools.org/gpgmail/index.html and install it. Not sure what version is included with the MacGPG package, but this fixed the problem for me.
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I am having the same issue. Does anyone have a solution?
Solved: Download GPGMail 1.4.1 from https://www.gpgtools.org/gpgmail/index.html and install it. Not sure what version is included with the MacGPG package, but this fixed the problem for me.