Files renamed w wrong month

Hazel’s behaving in a way I’ve never seen before.
It’s renaming files for me, based on a date in the file (when a receipt was emailed). The odd thing, though, is that it’s using “08” as the month, even when it should be “06” or “07”.
It’s getting the year (so far they’re all 2020 files, so this may not mean much) and the day correct.
So a file internally dated “2020-06-27” in one instance and “Jun. 27, 2020” in its second, is getting renamed “2020-08-27” (when I’m expecting “2020-06-27”).
Strange? Anyone else seen anything like this before? The files in question are email messages printed to PDF (from Mailmate), and the only odd thing I can think of is that in some cases, the first date — the date header in the email — is offset by a day as compared to the date on the receipt. None of these file-dates straddle the end of one month and the beginning of the next.
This isn’t a new Hazel rule, either, though I hadn’t invoked it in ages; it’s possible it was always borked and I just failed to notice, but I don’t think so?
Hazel 4.4.5 (build 1576); macOS 10.15.6.
It’s renaming files for me, based on a date in the file (when a receipt was emailed). The odd thing, though, is that it’s using “08” as the month, even when it should be “06” or “07”.
It’s getting the year (so far they’re all 2020 files, so this may not mean much) and the day correct.
So a file internally dated “2020-06-27” in one instance and “Jun. 27, 2020” in its second, is getting renamed “2020-08-27” (when I’m expecting “2020-06-27”).
Strange? Anyone else seen anything like this before? The files in question are email messages printed to PDF (from Mailmate), and the only odd thing I can think of is that in some cases, the first date — the date header in the email — is offset by a day as compared to the date on the receipt. None of these file-dates straddle the end of one month and the beginning of the next.
This isn’t a new Hazel rule, either, though I hadn’t invoked it in ages; it’s possible it was always borked and I just failed to notice, but I don’t think so?
Hazel 4.4.5 (build 1576); macOS 10.15.6.