Comments about limiting WindowRounding to a reasonable size.

imgui.h

@@ -1371,7 +1371,7 @@ struct ImGuiStyle
 {
     float       Alpha;                      // Global alpha applies to everything in Dear ImGui.
     ImVec2      WindowPadding;              // Padding within a window.
-    float       WindowRounding;             // Radius of window corners rounding. Set to 0.0f to have rectangular windows.
+    float       WindowRounding;             // Radius of window corners rounding. Set to 0.0f to have rectangular windows. Large values tend to lead to variety of artifacts and are not recommended.
     float       WindowBorderSize;           // Thickness of border around windows. Generally set to 0.0f or 1.0f. (Other values are not well tested and more CPU/GPU costly).
     ImVec2      WindowMinSize;              // Minimum window size. This is a global setting. If you want to constraint individual windows, use SetNextWindowSizeConstraints().
     ImVec2      WindowTitleAlign;           // Alignment for title bar text. Defaults to (0.0f,0.5f) for left-aligned,vertically centered.