fix StoreCounterTooLow for forced slaves

I couldn't help myself and had another quick look at CI and noticed the QUICK suite failing a bit too much for my liking.
Apparently I have introduced a bug with my latest merges (not sure how/why I missed it).
This pull request should fix that.
CI tests are still running, but the quick suite that was now consistently failing already passed again, so things should probably be good again.