Specialist's skills (base and booked) kaput

Haven't seen thread for this so here you are, apologies if duplicate obvisouly.

Scared explorer came back with 60 granite after a 9 day prolonged, usually this is in the few hundreds as he has base x4

Sturdy shovel appears to have zero effect, equivalent explorers with/without skills returning the same from equivalent searches.

So, I have nearly 100 explorers, all now booked with 3 sturdy shovel, doing typically 3-4 mediums and one very long/prolonged over a day.

I'm owed 9% of that thanks.

Lots of reports on chat of geos having similar issues.

That the skills for the geologists are disappearing is already known.
But now the explores are joining them.

I should get every return from my 65 explorers if every explorer would return with the minimum + skill related extras 1052 pumpkins last time the real return was 748 pumpkins this is a difference of 304 pumpkins, my explores take 07:53:23 h for 1 trip, about 8 hours, I can send them 3 times a day on there way.
So al my mouse clicking gives me around a 900 pumpkins short every day for as long as the event will take. This probably will never be compensated.

Some information is found in German on the German settlers forum
https://forum.diesiedleronline.de/th...ngegeben-24268

Investigating is going on according the mod BB_Ondgrund, lets hope for the best.