Cor values in goup level effects are not in summary anymore

I am using multivariate mixed model with brms in R.

I have inserted several linear mixed models into my model as follows:

brm_new ← brms::brm(bf_speed + bf_barren + bf_cari + bf_dist + bf_shrub + bf_elev + set_rescor(TRUE), data= males4,
warmup = 500,iter = 6000, thin=2,chains = 2, init = “random”,
seed = 12345,
cores = my.cores)
For group level effects sd and cor values should appear in the summary (and this was the case). Recently i run the code again and cor values were not shown anymore. Did anyone had that problem already? Did anything changed in the function?