I've not seen many threads on this, so I'll start one.
I just developed a roll of 400TX at 30°C using RodinalX (Xtol blended with Rodinal, ratio for Rodinal+Xtol+Water is 1+20+80). I use a single reel stainless steel tank, and the volume of chemistry used is 250ml. I use a water stop followed by fresh TF4 fixer. Tap water was used for all chemistry.
Now, after removing the film from the fixer, I see many small spots, around 2mm in diameter randomly scattered on the film. These dots appear green at a certain angle, but disappear at other angles. Reading up, it sounds like dichroic stains to me (but why not the whole film? why just spots?).
Now, the book I read (Roger Hicks' Darkroom Basics and Beyond) mentions that dichroic stains are uncommon nowadays, but he does not mention the effects or consequences.
So what are the consequences of dichroic stains on films? Incidentally, after the film dried, the spots were no longer visible. I have not tested rewetting the film.