Skip on ripped track, but FLAC only, not on MP3

[wcn_dave]

I have been using a multi-rip process for years, over a decade, to get tracks to two drives for network consumption as FLAC, and device portability as MP3.
However today I listed to just one ripped track, and it had a skip after about 17 seconds.
The MP3 does not.

I tried to re-rip, exactly the same result
I tried a different drive, exactly the same result
I tried writing to a different HD, same result...

Any idea why this might be, and how to overcome it?
Accurate says:

Information ripping to FLAC, 'Track 21' to 'C:\Users\Dave\Music\Queen\Bohemian Rhapsody\21 Queen - Don't Stop Me Now (...Revisited).flac'
Track 21: Ripped LBA 322966 to 339296 (3:37) in 0:05. Filename: C:\Users\Dave\Music\Queen\Bohemian Rhapsody\21 Queen - Don't Stop Me Now (...Revisited).flac
AccurateRip: Accurate (confidence 59) [Pass 1]
CRC32: 94E76A77 AccurateRip CRC: 769F4A28 (CRCv2) [DiscID: 022-003e73e5-03ef3fcb-4812bd16-21]
AccurateRip Verified Confidence 59 [CRCv2 769f4a28]
AccurateRip Verified Confidence 200 [CRCv2 15a5f17d], Using Pressing Offset +12
AccurateRip Verified Confidence 7 [CRCv2 44d3be51], Using Pressing Offset -18
AccurateRip Verified Confidence 2 [CRCv2 ce6ef11f], Using Pressing Offset +6

[Spoon]

Convert the flac file to wave, if dBpoweramp does not show an error then the flac file is 100% the same as the cd rip, because at the end of conversion is a check on a stored md5