scrollUp sets scrollTop to 0

[skadoosh4u]

Hi im using angular 12 and ngx-infinite scroll version 13.0.0 as there is no 12.0.0, so the issue im facing is already reported before but not sure if theres a fix or a workaround for it as i couldnt find it
if i unshift elements in the array on scrollUP it should be at the element which was there before triggering scroll but it goes to the first element of the list and you wont be able scroll up again unless you scroll down and scroll up
it works only when scrolled up slowly but if its scrolled up to 0 then it stays there