I'm not sure how to say this.
When you add a local adjustment brush, there will be a mark/point. So when you want to go back and edit that adjustment, you could click on the point and it will edit it.
So, if you have 5 brush adjustment, there will be 5 marks/points.
Now, the marks/points disappear. I can't edit the adjustment that I already made. Did I did something with any options that disable this function?