pagination breaks when sorting posts ascending

I am looking for posts of a specific user in a specific thread ordered by time.

Pagination works when leaving default parameters, but breaks when changing it to ascending.

In the example it sends me straight to page three:

DESC:

https://openinverter.org/forum/search.php?st=0&sk=t&sd=d&sr=posts&keywords=Tesla+Charger+Support+Thread&t=78&author=jack+bauer&fid%5B%5D=10&ch=1000&start=75

ASC:

https://openinverter.org/forum/search.php?keywords=Tesla+Charger+Support+Thread&terms=all&author=jack+bauer&fid%5B%5D=10&sc=1&sf=all&sr=posts&sk=t&sd=a&st=0&ch=1000&t=78&submit=Search

Try clicking (1) and (3) in the search queries and you will find odd behaviour

Edit: In fact, ASC/DESC doesn't seem to have an effect here, the pagination behaves weird with the search query whichever way I order the results.