Middle mouse button stopped panning in gimp

[Markus Grunwald]

Hello,

Usually I could press the middle mouse button (of my synaptics
touchpad) to pan an image around in gimp. This stopped working today
:(

What can I do?

% gimp --version
GNU Image Manipulation Program Version 2.8.18

ii  gimp                              2.8.18-1              amd64               
  GNU Image Manipulation Program

cu
--
Markus Grunwald