XTOL Stock FP4+ 120 unusual cloudy effect in grey areas

[Simplicius]

Her some examples, cropped from 120 negatives

Looks almost identical to the marks I had except more extensive. Just scanned last night one more of the same 'batch' (bought fresh at the same time, stored identically) that I developed last week after my post, thankfully no issues, it appears to be a single roll of FP4 in my case.