Remove front list one data, then data deleted if you do not reset all the data, then the next load will load a less data
Such as a load 1, 2, 3, 4, 5, you have 3 deleted, the backend will think the second page is 7 8 9 10 11, 6 will be less loaded (because the first page is 1, 2, 4, 5 6), inquired of god?