Task Timeline, Show "Only On Change" not working

Hello, the check box "Show "Only On Change" tasks" in the task timeline overview, doesn't work. When unchecked, I still see "Only on change" tasks in the overview list. I can't refresh the page because it will re-check the option by default, so I am stuck in a loop. If I uncheck and recheck, it will compress the entire list into one single line of incomprehensible text.

Thanks,