The phrase "annoying glitches" refers to small errors or problems in something like technology or software that can be irritating or bothersome. Full definition
However, most annoying glitches we experienced were attributed to software, rather than hardware, problems. (trustedreviews.com)
The clearer your video quality, the more bandwidth it takes up and the more likely it is to experience lag times and other annoying glitches. (cnet.com)
A couple of annoying glitches was a need to «pair» our phone twice in order to get Bluetooth connectivity for both phone and audio systems. (motoring.com.au)