It's an issue with Tk where the font name used in the output doesn't match that used by Postscript. I added a fix for this for DejaVu Sans Mono some years ago, but the quick change to Menlo missed this. I will add a check for Menlo with the find-replace code.
> On Jan 8, 2021, at 11:34 AM, pd-list-request(a)lists.iem.at wrote:
>
> Date: Fri, 08 Jan 2021 07:17:00 +0100
> From: IOhannes m zmölnig <zmoelnig(a)iem.at <mailto:zmoelnig@iem.at>>
> To: pd-list(a)lists.iem.at <mailto:pd-list@lists.iem.at>
> Subject: Re: [PD] Menlo in MacOS X
> Message-ID: <F247B545-1CA1-4183-AEFB-A556AACB8C77(a)iem.at <mailto:F247B545-1CA1-4183-AEFB-A556AACB8C77@iem.at>>
> Content-Type: text/plain; charset=utf-8
>
> Am 8. Jänner 2021 02:41:10 MEZ schrieb "Julián Villegas" <villegas.julian(a)gmail.com <mailto:villegas.julian@gmail.com>>:
>>
>> For example, would this be worth of opening an issue in
>> GitHub?
>
> no.
> i dont think its a "bug" in Pd.
>
> Pd tries to use "Menlo" on macOS, because it fixes a couple of issues.
> if that font cannot be found, the font engine of your system will automatically use a similar font, eg "Courier".
> the same happens with ghostscript.