Mouse click released immediately on drag; can't drag nodes I've recently switched to Linux Mint from Windows. Everything in Blender is running fine, except for the fact that I can't seem to hold down 'mouse drag' operations.
I click, hold down the mouse button - yet as soon as I move the mouse, the button is showing as released by Blender. I've installed the Screencast Keys add-on to demonstrate this. When checking the console, I get a weird warning related to keycodes.

Bad keycode lookup. Keysym 0x0 Status: XLookupNone
'' 0x7f9503135200 0x7f9533585b40

Here is a GIF to demonstrate the problem: 
Value sliders in the UI seem to work, but nodes and their connections can't be dragged - making it pretty difficult to work.
EDIT:
To clarify, I'm using XFCE as the window manager
When I try to move nodes like this, it sometimes releases on its own too, which is pretty annoying. Just click on the node and press G to move it. It never let me down. ;)