From 763f3f51c9977ddf7643fc2a74b1f608ac341118 Mon Sep 17 00:00:00 2001
From: maddavo <1432875+maddavo@users.noreply.github.com>
Date: Wed, 9 Sep 2026 23:54:51 +1000
Subject: [PATCH 1/2] Keep SystemHeat PAW stable when flux changes

---
 Source/Modules/ModuleSystemHeat.cs | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/Source/Modules/ModuleSystemHeat.cs b/Source/Modules/ModuleSystemHeat.cs
index 600032b..f73d39e 100644
--- a/Source/Modules/ModuleSystemHeat.cs
+++ b/Source/Modules/ModuleSystemHeat.cs
@@ -293,17 +293,10 @@ protected void Update()
 
       SystemFluxUI = String.Format("{0}W", Utils.ToSI(totalSystemFlux, "F0"));
       LoopTemperatureUI = String.Format("{0:F0} / {1:F0} K", currentLoopTemperature, nominalLoopTemperature);
-      if (totalSystemFlux > 0f)
-      {
-        Fields["SystemTemperatureUI"].guiActive = true;
-        Fields["SystemTemperatureUI"].guiActiveEditor = true;
-        SystemTemperatureUI = String.Format("{0:F0} K", totalSystemTemperature);
-      }
-      else
-      {
-        Fields["SystemTemperatureUI"].guiActive = false;
-        Fields["SystemTemperatureUI"].guiActiveEditor = false;
-      }
+      // Keep the PAW layout stable when flux briefly reaches zero or changes sign.
+      // Visibility is controlled by SetSystemHeatModuleEnabled, not by the
+      // instantaneous value being displayed.
+      SystemTemperatureUI = String.Format("{0:F0} K", totalSystemTemperature);
     }
 
     protected void FindSimulator()

From 604891cbceae4cb15b5e38b708b2e8fa4bdffd9d Mon Sep 17 00:00:00 2001
From: maddavo <1432875+maddavo@users.noreply.github.com>
Date: Fri, 11 Sep 2026 00:37:00 +1000
Subject: [PATCH 2/2] Document PAW flicker fix

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3267421..6a3e2eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 
 ## Unreleased
+- Fixed SystemHeat part-action-window fields flickering when system flux changes.
 - Improved performance
   - Color animations no longer update all materials when they haven't changed.