It could be that the blueberry jam is too too sweet. I get sweet fruit on the inhale, so my wacky brain maybe registered that sweetness as strawberry. I used WF shortbread as the backup flavor to WF toast and butter (can’t recall the exact name off the top of my head). Thinking swapping the cookie for cereal 27 and a touch of AP????
If the jam is too sweet maybe try adding 1-2% ssa blueberry. It has a tartness to it. I didn’t like it much on the sft but when added to a sweet flavor, it really popped for me.