diff --git a/3rdparty/dear-imgui/imgui.cpp b/3rdparty/dear-imgui/imgui.cpp
index 3de95d01f..70d581927 100644
--- a/3rdparty/dear-imgui/imgui.cpp
+++ b/3rdparty/dear-imgui/imgui.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 WIP
 // (main code and documentation)
 
 // Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
@@ -3285,7 +3285,12 @@ void ImGui::Shutdown(ImGuiContext* context)
 
     // Save settings (unless we haven't attempted to load them: CreateContext/DestroyContext without a call to NewFrame shouldn't save an empty file)
     if (g.SettingsLoaded && g.IO.IniFilename != NULL)
+    {
+        ImGuiContext* backup_context = GImGui;
+        SetCurrentContext(context);
         SaveIniSettingsToDisk(g.IO.IniFilename);
+        SetCurrentContext(backup_context);
+    }
 
     // Clear everything else
     for (int i = 0; i < g.Windows.Size; i++)
@@ -4186,7 +4191,7 @@ static ImGuiWindow* CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFl
             if (ImLengthSqr(settings->Size) > 0.00001f)
                 size = ImFloor(settings->Size);
         }
-    window->Size = window->SizeFull = window->SizeFullAtLastBegin = size;
+    window->Size = window->SizeFull = window->SizeFullAtLastBegin = ImFloor(size);
     window->DC.CursorMaxPos = window->Pos; // So first call to CalcSizeContents() doesn't return crazy values
 
     if ((flags & ImGuiWindowFlags_AlwaysAutoResize) != 0)
@@ -5658,7 +5663,7 @@ static void SetWindowSize(ImGuiWindow* window, const ImVec2& size, ImGuiCond con
     if (size.x > 0.0f)
     {
         window->AutoFitFramesX = 0;
-        window->SizeFull.x = size.x;
+        window->SizeFull.x = ImFloor(size.x);
     }
     else
     {
@@ -5668,7 +5673,7 @@ static void SetWindowSize(ImGuiWindow* window, const ImVec2& size, ImGuiCond con
     if (size.y > 0.0f)
     {
         window->AutoFitFramesY = 0;
-        window->SizeFull.y = size.y;
+        window->SizeFull.y = ImFloor(size.y);
     }
     else
     {
diff --git a/3rdparty/dear-imgui/imgui.h b/3rdparty/dear-imgui/imgui.h
index 71845f9b3..0d1c4446f 100644
--- a/3rdparty/dear-imgui/imgui.h
+++ b/3rdparty/dear-imgui/imgui.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 WIP
 // (headers)
 
 // See imgui.cpp file for documentation.
@@ -23,8 +23,8 @@
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY00 then bounced up to XYY01 when release tagging happens)
-#define IMGUI_VERSION               "1.65"
-#define IMGUI_VERSION_NUM           16501
+#define IMGUI_VERSION               "1.66 WIP"
+#define IMGUI_VERSION_NUM           16600
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)
diff --git a/3rdparty/dear-imgui/imgui_demo.cpp b/3rdparty/dear-imgui/imgui_demo.cpp
index de891bec1..2cce0dd9e 100644
--- a/3rdparty/dear-imgui/imgui_demo.cpp
+++ b/3rdparty/dear-imgui/imgui_demo.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 WIP
 // (demo code)
 
 // Message to the person tempted to delete this file when integrating ImGui into their code base:
diff --git a/3rdparty/dear-imgui/imgui_draw.cpp b/3rdparty/dear-imgui/imgui_draw.cpp
index 3afcac4e9..dd30b4766 100644
--- a/3rdparty/dear-imgui/imgui_draw.cpp
+++ b/3rdparty/dear-imgui/imgui_draw.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 WIP
 // (drawing and font code)
 
 /*
diff --git a/3rdparty/dear-imgui/imgui_internal.h b/3rdparty/dear-imgui/imgui_internal.h
index 050f2acf2..cedf1c32a 100644
--- a/3rdparty/dear-imgui/imgui_internal.h
+++ b/3rdparty/dear-imgui/imgui_internal.h
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 WIP
 // (internal structures/api)
 
 // You may use this file to debug, understand or extend ImGui features but we don't provide any guarantee of forward compatibility!
diff --git a/3rdparty/dear-imgui/imgui_widgets.cpp b/3rdparty/dear-imgui/imgui_widgets.cpp
index eea79eb6a..5ce2f11bd 100644
--- a/3rdparty/dear-imgui/imgui_widgets.cpp
+++ b/3rdparty/dear-imgui/imgui_widgets.cpp
@@ -1,4 +1,4 @@
-// dear imgui, v1.65
+// dear imgui, v1.66 WIP
 // (widgets code)
 
 /*