Set here to follow?

The red box is modified, the following will follow, I found it for the first time.
I remember that it didn’t move before, where did I set it, where can I change the chord?

From there what changes is the scale.
Note that in b) the D#/Eb scale appears

I changed the content in the red box yesterday.
The following chords will follow along.
Today is the same again.
I don’t know what I clicked yesterday?
Sometimes I want to follow the change, and sometimes I don’t want to change.
Can anyone tell me how to set it up?

@swingmix I cannot follow your question.
Could you share a before/after picture so we can compare what changed?

For example, I selected F in the red box
Then the chord in the area C below will become F