I develop film at home and have tam idea on what might cause this problem:
- I got this problem when not using a pre soak, with a two year old rollei digibase in a Jobo atl. maybe the short development time and older developer caused the anti halidation layer to be not fully be removed. I didn’t experience the problem when using slightly more (10%) chemicals in the tank than recommended in combination with a pre wash of the film before development. Therefore I guess it is a development issue.