Table with pagination problem (not go back to P.1!)

Hi guys, I am not sure is the bug in pagination still there or just my code failed.

If my guests start searching for something when they are NOT in page one of the table,
they are not able to be directed to page 1 of the result.

e.g.
Guest in page 2 →
search with dropdown menu or input field →
they will see page 2 (sometimes page 0) of the result

I also tried the new pagination bar, but it is not able to link with my table.
Also tired but fail: selectRow(0) / next() / prev()

What should I do? Thanks a lot!!

my site:
https://www.kingsway-hk.com/joblist?lang=en

Any one has idea? Please help!