The batch numbers are 015348/02 and 014948/22.
Sepia toning seems to work as usual. It gives the usual beautiful, deep brown tones. Normally I would expect a cooler paper to give even darker browns, but no, in this case it seems to me to look the same. Which is a good thing, as I love the look of Fomabrom in indirect sepia.
Someone on a German forum said he noticed this cooling, too.
On the other hand, I've just received a reply from Foma, stating that they have definitely made no change in the production.
So who knows, maybe I inadvertently did something differently, though I can't imagine what that could be. Forgetting to add potassium bromide to the developer might be an explanation, but I think it's unlikely because I used developers mixed on different days. I have no idea what I could have done wrong.