From 8531b9758523e20ed11cd0e214789df2fb14c68e Mon Sep 17 00:00:00 2001
From: Ya-Fan Chen <20377719+Lexachoc@users.noreply.github.com>
Date: Fri, 16 Oct 2026 17:25:52 +0200
Subject: [PATCH 1/4] Update attrs.sum.editType to 'calc'

Set editType of attrs.sum to 'calc' for normalization.
---
 src/plots/ternary/layout_attributes.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plots/ternary/layout_attributes.js b/src/plots/ternary/layout_attributes.js
index 752837ca92b..363e6851714 100644
--- a/src/plots/ternary/layout_attributes.js
+++ b/src/plots/ternary/layout_attributes.js
@@ -98,6 +98,9 @@ var attrs = module.exports = overrideAll({
     caxis: ternaryAxesAttrs
 }, 'plot', 'from-root');
 
+// ternary.sum is used by calc to normalize
+attrs.sum.editType = 'calc';
+
 // set uirevisions outside of `overrideAll` so we can get `editType: none`
 attrs.uirevision = {
     valType: 'any',

From fbd0447263741fb46c149474bc66a3d8225ec869 Mon Sep 17 00:00:00 2001
From: Ya-Fan Chen <20377719+Lexachoc@users.noreply.github.com>
Date: Fri, 16 Oct 2026 17:34:11 +0200
Subject: [PATCH 2/4] add draftlog

---
 draftlogs/8128_fix.md | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 draftlogs/8128_fix.md

diff --git a/draftlogs/8128_fix.md b/draftlogs/8128_fix.md
new file mode 100644
index 00000000000..a162505cdaf
--- /dev/null
+++ b/draftlogs/8128_fix.md
@@ -0,0 +1 @@
+- Fix `ternary.sum` relayout to recalculate ternary trace data [[#8028](https://github.com/plotly/plotly.js/pull/8028)]

From 90fd4791118e8eb4d41d1a7e5e9578e5be01ce74 Mon Sep 17 00:00:00 2001
From: Ya-Fan Chen <20377719+Lexachoc@users.noreply.github.com>
Date: Fri, 16 Oct 2026 17:37:28 +0200
Subject: [PATCH 3/4] fix typo in draftlog

---
 draftlogs/8128_fix.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/draftlogs/8128_fix.md b/draftlogs/8128_fix.md
index a162505cdaf..074a5f73357 100644
--- a/draftlogs/8128_fix.md
+++ b/draftlogs/8128_fix.md
@@ -1 +1 @@
-- Fix `ternary.sum` relayout to recalculate ternary trace data [[#8028](https://github.com/plotly/plotly.js/pull/8028)]
+- Fix `ternary.sum` relayout to recalculate ternary trace data [[#8128](https://github.com/plotly/plotly.js/pull/8128)]

From 3d8621dcdda5b22978f7f7ad8412bbbc995209df Mon Sep 17 00:00:00 2001
From: Ya-Fan Chen <20377719+Lexachoc@users.noreply.github.com>
Date: Fri, 16 Oct 2026 15:44:01 +0000
Subject: [PATCH 4/4] update schema

---
 test/plot-schema.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/plot-schema.json b/test/plot-schema.json
index 4d51312e82d..2783212ffbc 100644
--- a/test/plot-schema.json
+++ b/test/plot-schema.json
@@ -12427,7 +12427,7 @@
         "sum": {
           "description": "The number each triplet should sum to, and the maximum range of each axis",
           "dflt": 1,
-          "editType": "plot",
+          "editType": "calc",
           "min": 0,
           "valType": "number"
         },