1) a defect or malfunction in a machine or plan.
2) Computers: any error, malfunction, or problem.
Compare "bug".
3) a brief or sudden interruption or surge in voltage in an electric circuit.

Link to present incidents:
Clearing jungle camp at Calais: Awaiting the migrants was a complicated plan, fine-tuned by French officials since late summer, to disperse them in waves of bus journeys to dozens of towns and villages all over France. The glitch is that some of the towns and villages hosting these 451 reception centers — abandoned barracks, hospitals, disused government vacation camps — have been demonstrating against their arrival in recent weeks.