noun / verb
glitch
GLITCH/ɡlɪtʃ/
A brief fault or failure to work properly.
The screen glitches into scrambled pixels before returning to normal.

Etymology
Glitch possibly comes from Yiddish glitsh, “a slip,” though a direct German origin is also suggested. It apparently began as engineering jargon before broadening to a small, temporary fault.
In context
Sometimes you get a little glitch that resolves itself automatically. You're still going to want to run an RCA process on that and you want to know what caused the glitch.