Weird match results

Jardan

I had a match in which I mori'ed one survivor, and had only 4 hooks in general. When the match was over, I saw the whole "brutal killer" end screen, but when I checked the grade progress tab it showed me that I depipped.

What is interesting I had other weird situations in which I got, for example, "Entity still hungers" but I pipped, so it is not a one-time situation. Is it a bug or am I missing something?