Hello,
at the beginning of the "fade out" you should see a bar with the number red marked. Right click on that bar and select "bar settings". On the first line of the column "volume" it should be selected "fade (per bar)" with a number beside. Delete the number and select "..." instead of "fade".
Hope this helps


Macbook M2 Pro 32 GB ram | OSX 13.6 | BinaB 2023 | Logic Studio XI |