I have been having the following issue since possibly the last major update in October (maybe even longer). I have reported the issue in-game but have not seen the issue go away. I looked around if there has been other people having same issue but nothing so far.
here is what happens:
you turn in your journal to Khloe and you get a set of guaranteed rewards (Left side) and a set of optional rewards (which you have to choose between two items) on the right. For the longest time I have been able to get the optional rewards without issue, however, the guaranteed rewards do not drop. at one point I had the opposite happen.
this is fine if the guaranteed reward is maps or tomes but it really hurts when it is a good item (cracked crystals ex) and i miss out.
I would like to know if anybody else had noticed this or (hopefully) support can do something to fix it. getting really annoying

Thank you