From d9a741aa0e4a50109a9d28d173ca7e190c1f330f Mon Sep 17 00:00:00 2001
From: 4DBug <4DBug@github.com>
Date: Thu, 8 Oct 2026 10:33:05 -0500
Subject: [PATCH] Fix StyleCopy for named-field vectors (Style Editor assert)

---
 build/ImGui.luau                       |  2 +-
 imgui/imgui_demo_widgets.lua           |  2 +-
 tools/test/scripts/t_style_editor.luau | 11 +++++++++++
 3 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 tools/test/scripts/t_style_editor.luau

diff --git a/build/ImGui.luau b/build/ImGui.luau
index a2bc909..e3f31ce 100644
--- a/build/ImGui.luau
+++ b/build/ImGui.luau
@@ -21982,7 +21982,7 @@ local function StyleCopy(dst, src)
         elseif type(v) == "table" and getmetatable(v) ~= nil and type(v[1]) == "number" then
             local c = dst[k]
             if type(c) ~= "table" then c = setmetatable({}, getmetatable(v)); dst[k] = c end
-            for _, key in ipairs({ "x", "y", "z", "w" }) do if rawget(v, key) ~= nil then c[key] = v[key] end end
+            for _, key in ipairs({ "x", "y", "z", "w" }) do if rawget(v, key) ~= nil then rawset(c, key, rawget(v, key)) end end
         else
             dst[k] = v
         end
diff --git a/imgui/imgui_demo_widgets.lua b/imgui/imgui_demo_widgets.lua
index 14140ac..3f7685a 100644
--- a/imgui/imgui_demo_widgets.lua
+++ b/imgui/imgui_demo_widgets.lua
@@ -1629,7 +1629,7 @@ local function StyleCopy(dst, src)
         elseif type(v) == "table" and getmetatable(v) ~= nil and type(v[1]) == "number" then
             local c = dst[k]
             if type(c) ~= "table" then c = setmetatable({}, getmetatable(v)); dst[k] = c end
-            for _, key in ipairs({ "x", "y", "z", "w" }) do if rawget(v, key) ~= nil then c[key] = v[key] end end
+            for _, key in ipairs({ "x", "y", "z", "w" }) do if rawget(v, key) ~= nil then rawset(c, key, rawget(v, key)) end end
         else
             dst[k] = v
         end
diff --git a/tools/test/scripts/t_style_editor.luau b/tools/test/scripts/t_style_editor.luau
new file mode 100644
index 0000000..65d87e2
--- /dev/null
+++ b/tools/test/scripts/t_style_editor.luau
@@ -0,0 +1,11 @@
+local G = require(game:GetService("ReplicatedStorage"):WaitForChild("ImGui"))
+local ImGui = G.ImGui
+ImGui.CreateContext(); G.ImGui_ImplRoblox.Init()
+local f = 0
+game:GetService("RunService").Stepped:Connect(function()
+    f += 1
+    G.ImGui_ImplRoblox.NewFrame(); ImGui.NewFrame()
+    ImGui.Begin("SE"); ImGui.ShowStyleEditor(); ImGui.End()
+    ImGui.Render(); G.ImGui_ImplRoblox.RenderDrawData(ImGui.GetDrawData())
+    if f == 10 then print("SE OK") end
+end)