You are not hallucinating. I had posted a similar problem 7-8 months ago here regarding 6 sided dice. While I would rate myself a beginner in the realm of 3d resin printing you will have to experiment a bit with exposure times, lift settings and orientation to try an minimize the aberrations of your dice.
I am guessing the sides that are "warped' are probably associated with the vertex that is attached to the support fins? As I stated above you could try orienting the object on the edge instead and add your own supports via whatever slicer software you may be using.
It will be interesting to hear your findings as well.
I have been away from printing dice for a bit and did not document my results, so I will have to start over again and report back when I do.
Good Luck.