After a double elimination, 15-year-old Sean and 18-year-old Conor Price from County Wicklow in Ireland were given the boot.
Anthony Russell replacement Sam Black, 20, was also shown to the studio door.
However, fans spotted that neither act was shown their competition "best bits" highlights package, which eliminated contestants normally get as a farewell.
Firstly shocked that their favourite acts had left the show, fans kicked off at the format changes.Related articles
ITVThe X Factor 2017: Fans SHOCKED as crucial part of show AXED in double elimination
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Did I miss something or did they not do the time in the competition part for Sean and Conor or Sam? #XFactor