From 75bd726f150d0a92b9bc959c71c775c9529415d3 Mon Sep 17 00:00:00 2001
From: Cameron DeCoster <cameron.decoster@gmail.com>
Date: Mon, 6 Jul 2026 17:15:25 -0600
Subject: [PATCH] fix: Handle NaN values in sortAxisCategoriesByValue
 conditional check

---
 src/plots/plots.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/plots/plots.js b/src/plots/plots.js
index 4c61a043688..53b24239910 100644
--- a/src/plots/plots.js
+++ b/src/plots/plots.js
@@ -3193,8 +3193,7 @@ function sortAxisCategoriesByValue(axList, gd) {
                         if(catIndex === undefined) catIndex = cdi[axLetter];
 
                         // Skip points whose position is not a valid category
-                        // (e.g. a null/NaN coordinate maps to BADNUM)
-                        if (catIndex == null || catIndex < 0) continue;
+                        if (isNaN(catIndex) || catIndex < 0) continue;
 
                         value = cdi.s;
                         if(value === undefined) value = cdi.v;