Fixed calling SetNextWindowSize()/SetWindowSize() with non-integer values leading to accidental alteration of window position. We now round the provided size. (#2067)

docs/CHANGELOG.txt

@@ -37,6 +37,8 @@ Other Changes:
 
 - Fixed calling DestroyContext() always saving .ini data with the current context instead
   of the supplied context pointer. (#2066)
+- Fixed calling SetNextWindowSize()/SetWindowSize() with non-integer values leading to 
+  accidental alteration of window position. We now round the provided size. (#2067)
   
 
 -----------------------------------------------------------------------

imgui.cpp

@@ -4187,7 +4187,7 @@ 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)
@@ -5659,7 +5659,7 @@ 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
     {
@@ -5669,7 +5669,7 @@ 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
     {