I noticed when killing in Darkness Falls that the max stack size for emerald seals (possibly other seals) is 100, on a grab bag they mentioned that stack size was changed from 250 to 1000 which would be a great QoL here but either way max stack size of 100 is wrong.
Source:
https://darkageofcamelot.com/article/friday-grab-bag-12152017
Source:
https://darkageofcamelot.com/article/friday-grab-bag-12152017