I've seen some posts about visitor visas being declined. It seems to be a wider problem, here are some recent news articles:
Relatives from Albania denied New Zealand visas for wedding https://www.nzherald.co.nz/nz/news/a...ectid=12196584
New Year's reunion for family who missed out on Christmas because of visa delay https://www.nzherald.co.nz/nz/news/a...ectid=12182560
Wedding plans 'in tatters' after Immigration NZ denies visa for sister to come as bridesmaid https://www.nzherald.co.nz/nz/news/a...ectid=12146112
Bridesmaid sister gets visa offer following Immigration NZ decision review https://www.nzherald.co.nz/nz/news/a...ectid=12153884
Prevention better than cure: Minister defends Immigration NZ stance on visitor's visas https://www.stuff.co.nz/tarana/10756...visitors-visas