ButtonBehavior: Default assignment of pressed behavior now also test for ImGuiButtonFlags_PressedOnDragDropHold which wasn't the case before.

imgui_widgets.cpp

diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp
index 0afa50b..c7d142c 100644
--- a/imgui_widgets.cpp
+++ b/imgui_widgets.cpp
@@ -462,7 +462,7 @@
     }
 
     // Default behavior requires click+release on same spot
-    if ((flags & (ImGuiButtonFlags_PressedOnMask_ & ~ImGuiButtonFlags_PressedOnDragDropHold)) == 0)
+    if ((flags & ImGuiButtonFlags_PressedOnMask_) == 0)
         flags |= ImGuiButtonFlags_PressedOnClickRelease;
 
     ImGuiWindow* backup_hovered_window = g.HoveredWindow;
@@ -5290,6 +5290,8 @@
         button_flags |= ImGuiButtonFlags_AllowItemOverlap;
     if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
         button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
+    else
+        button_flags |= ImGuiButtonFlags_PressedOnClickRelease;
     if (!is_leaf)
         button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;