Removing search in filter keeps the number of filtered rows

Hi !

My datatables works with Ajax and when I make a search in the filter input and delete my search, it returns only the number of rows were filtered.

For example :

I have

element 1
element 2
element 3
Then, I searched "3", that returns :

element 3
But, if I remove my search : "3", it returns only :

element 1
Or I want to get back :

element 1
element 2
element 3
Do you have any idea ?

BTW, the pageResize doesn't work anymore..

Thanks for reading.