diff --git a/DESCRIPTION b/DESCRIPTION
index 6180f933a..dd124183c 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -2,8 +2,8 @@ Package: brms
 Encoding: UTF-8
 Type: Package
 Title: Bayesian Regression Models using 'Stan'
-Version: 2.20.2
-Date: 2023-09-09
+Version: 2.20.3
+Date: 2023-09-14
 Authors@R:
     c(person("Paul-Christian", "Bürkner", email = "paul.buerkner@gmail.com",
              role = c("aut", "cre")),
diff --git a/R/predictor.R b/R/predictor.R
index 4cc410693..475242e54 100644
--- a/R/predictor.R
+++ b/R/predictor.R
@@ -59,7 +59,12 @@ predictor.bprepnl <- function(prep, i = NULL, fprep = NULL, ...) {
     # when 'nlform' must be evaluated jointly across observations
     # and hence 'loop' had been set to FALSE
     for (i in seq_along(args)) {
-      args[[i]] <- split(args[[i]], row(args[[i]]))
+      old_dim <- dim(args[[i]])
+      args[[i]] <- split(args[[i]], slice.index(args[[i]], 1))
+      if (length(old_dim) > 2L) {
+        # split drops array dimensions which need to be restored
+        args[[i]] <- lapply(args[[i]], "dim<-", old_dim[-1])
+      }
     }
     .fun <- function(...) eval(prep$nlform, list(...))
     eta <- try(
diff --git a/man/save_pars.Rd b/man/save_pars.Rd
index 0a2ef4895..1fefbd19b 100644
--- a/man/save_pars.Rd
+++ b/man/save_pars.Rd
@@ -36,7 +36,7 @@ A list of class \code{"save_pars"}.
 }
 \description{
 Control which (draws of) parameters should be saved in a \pkg{brms}
-model. The output of this function is ment for usage in the
+model. The output of this function is meant for usage in the
 \code{save_pars} argument of \code{\link{brm}}.
 }
 \examples{