Partition table: default.csv and partitions.bin

Dear All,
in my ESP32 platformio project I have the following setting in platformio.ini:

board_build.partitions = default.csv

The file default.csv is in my project tree.

What I found strange is that when I change the partition sizes (for instance reducing the size of the app0, app1 partitions) in the default.csv, after a rebuild the generated binary file “partitions.bin” does not change (with a binary compare).
Why?

Well your will be competing against the same-named file in Arduino-ESP32

so it might not take your file after all. Chose a unique filename and recheck.

Yeah, you were right. thank you!