4 weeks in the FV. Still OK?

[Fil]

I concur,, should be fine..

If you had any dry hop additions in for more than a week they may start to impart a grassy note,

and the other risk comes from cannibalistic yeast activity or autolysis but afaik in the volumes we brew its generally after a few months not weeks you need worry about that..

I have had beers stand 6weeks + in the FV without any problems, sometimes the brewery needs to take a back seat when life gets in the way ..