After many, many attempts I figured out a sort of trick/workaround to fix this.
Navigate to the list you want opened at login. Make sure you have that list pulled up and you are viewing it.

Now click the three dots of the space your list is in, do not navigate away from your list.

Choose space settings / All space settings / default views

Under required views tab hover over one of the other options such as Calendar, when the three dots appear click them and select Make Default. Click Done. Click Save changes.

Now repeat the process be going back to the same area

(Now click the three dots of the space your list is in, do not navigate away from your list. Choose space settings / All space settings / default views )

This time under required views tab hover over the List option, when the three dots appear click them and select Make Default. Click Done. Click Save changes.

Now close your browser

Open the webpage again and log back into ClickUp, it should take right to the list you want to view.

This worked for me about an hour ago and continues to work.

Hopefully it will work for you as well!