Mobile data switch back on when disabling wifi

I flashed MM D6633 23.5.A.1.291 on my D6683 but when I turn off wifi, it automatically turns on mobile data, even though I had disabled mobile data before, which means that I have to disable mobile data everytime I turn off wifi... This was not the case on LP D6633 5.1.1
How can I prevent this auto turn on of mobile data ?

Thank you

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