Overlapping nodes aren't compatible with ImGui::BeginDragDropTarget()

[Pycorax]

Description

Given an ImNodes node which contains a drag and drop target that is implemented using ImGui::BeginDragDropTarget() and ImGui::EndDragDropTarget(), if two of these nodes overlap such that the drag and drop targets overlap, attempting to drag and drop anything on to it will result in an assertion failure in ImGui::BeginDragDropTarget(): IM_ASSERT(g.DragDropWithinTarget == false); which results in a crash.

This works perfectly fine if there is no overlap. I'm not too sure how fix-able this issue is from ImNodes since it seems to be a limitation with ImGui's implementation of drag and drop targets but I figured it's important to note it here.

Demo

SHADE_Application_8u4aC0unkZ.mp4

[skaarj1989]

Works fine for me.

ImGui::BeginDragDropSource(ImGuiDragDropFlags_SourceAllowNullID)

2023-03-14.13-45-07.webm