there is a strange problem with the drag_and_drop.C from the tutorial. If I simply run it, it doesn’t work. I mean the macro starts without errors, but the drag.n.drop itself doesn’t work (dragging from the list to the canvas has no effect). It starts working only when I open browser from the same window (menu->File->Browse…). When I close browser, it stops working again. I tried it also with another gui program, the effect is the same - it works only after starting browser. It looks like the DNDManager is not working properly unless I start Browser.
What can be the reason? I’m running linux Mint 17.3, ROOT 5.34/34 installed from Mint repositories.