stan-dev · utkarshpawade · Apr 10, 2026 · Apr 10, 2026 · Apr 10, 2026 · Apr 15, 2026
diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,6 @@
 # bayesplot (development version)
 
+* Fixed legend border artifact in `ppc_freqpoly()` and `ppc_freqpoly_grouped()`.
 * Fixed `validate_chain_list()` colnames check to compare all chains, not just the first two.
 * Added test verifying `legend_move("none")` behaves equivalently to `legend_none()`.
 * Added singleton-dimension edge-case tests for exported `_data()` functions.

diff --git a/R/ppc-distributions.R b/R/ppc-distributions.R
@@ -468,6 +468,7 @@ ppc_freqpoly <-
       ) +
       scale_fill_ppc() +
       scale_color_ppc() +
+      guides(fill = guide_legend(override.aes = list(color = NA))) +
       facet_wrap_parsed("rep_label") +
       bayesplot_theme_get() +
       force_axes_in_facets() +

diff --git a/tests/testthat/_snaps/ppc-distributions/ppc-freqpoly-alpha-binwidth-size.svg b/tests/testthat/_snaps/ppc-distributions/ppc-freqpoly-alpha-binwidth-size.svg
diff --git a/tests/testthat/_snaps/ppc-distributions/ppc-freqpoly-default.svg b/tests/testthat/_snaps/ppc-distributions/ppc-freqpoly-default.svg
diff --git a/tests/testthat/_snaps/ppc-distributions/ppc-freqpoly-grouped-default.svg b/tests/testthat/_snaps/ppc-distributions/ppc-freqpoly-grouped-default.svg