Random effect models fail at initialization in 2.1.18 (random_effect_raw dim mismatch)

[simonmfr]

A model with a random effect fails at parameter initialization in 2.1.18. It reproduces on the counts_obj, so it doesn't seem data-specific:

library(sccomp); library(dplyr)
data("counts_obj")
counts_obj |>
  mutate(donor = sample) |>
  sccomp_estimate(~ type + (1 | donor), .sample = sample,
                  .cell_group = cell_group, .abundance = count,
                  inference_method = "hmc", cores = 1)

Error:

Chain 1 Unrecoverable error evaluating the log probability at the initial value.
Chain 1 Exception: mismatch in dimension declared and found in context; processing stage=parameter initialization; variable name=random_effect_raw; position=1; dims declared=(20,36); dims found=(20,35) (in '/tmp/RtmpBn8kxm/model-8cff8636a24e8.stan', line 348, column 2 to column 93)
Error: Fitting failed. Unable to retrieve the metadata.

Without random effect it works without any issues.

For now I will go back to 1.10.0 where it works. Any advice is appreciated.

Environment:
-sccomp 2.1.18
-cmdstanr 0.9.0, CmdStan 2.39.0
-R 4.4.3