I got a new Mac and now cannot switch tabs with a four-finger swipe left/right. Safari reloads the webpage I'm currently on instead of swiping to an adjacent one, displaying the message "This webpage was reloaded because a problem occurred." If I try swiping again the page displays a message indicating repeated problems with the webpage:
I'm using a 2019 Macbook Pro running Mojave 10.14.6 and BTT is version 3.186.