Hopefully, I can describe this effectively without a pic.
I pinch my black raspberry primocanes at 30-36" as recommended to encourage branching. The first full season (2021), when the floricanes were small/non-existent, the primocanes branched nicely - usually pushing about 6-8 laterals on each one.
However, the following season, 2022, when I had large, bearing floricanes present, the emerging floricanes only pushed 1-3 laterals when pinched, I believe because at 36", they’re still in the shade of last year’s floricanes.
This means this year’s floricanes came into spring with only a couple thick laterals on each cane, instead of about 6. While growing nicely and blooming, I can’t tell yet if it actually will affect my yield, but the plants look more “sparse” than last year. Am I the only one to notice this?