TransferData is null during Drag on Linux

问题

When I drag a node from Project Explorer onto TreeViewer DnD works fine on Windows, but does not work on Linux.

During debugging I see that TransferData has data on Windows

But does not when debug on Linux

Searching for possible cause didn't reveal anything. Any ideas what could be the problem here?

来源：https://stackoverflow.com/questions/28706697/transferdata-is-null-during-drag-on-linux