[exim] Bad file descriptor on logs?

I've upgraded to debian bullseye, and often i catch on logs:

Sep 23 00:00:08 mail exim[1468704]: 2024-09-23 00:00:08 1ssUci-006A4f-Ph failed to write to main log: length=91 result=-1 errno=9 (Bad file descriptor)
Sep 23 00:00:08 mail exim[1468704]: write failed on panic log: length=116 result=-1 errno=9 (Bad file descriptor)

exim seems to work properly; seems a problem on log rotation or something
like that (AFAIK rotation happens at 6.00, not on midnigt...).

Thanks.

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