GREMLIN

Supposed source of technical glitches (7)

Solution has appeared in 3 crosswords (2 across and 1 down):

• Quick crossword No 16,533 — 2023-05-02 23:00:52
  9A: Imaginary cause of a malfunction (7)
• Quick crossword No 16,119 — 2022-01-05 00:00:26
  22A: Somewhat mischievous fairy (7)
• Quick crossword No 15,877 — 2021-03-27 00:00:00
  12D: Supposed source of technical glitches (7)