Inheritance in sharing files

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Nextcloud version (eg, 20.0.5): 22.2.3
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04
Apache or nginx version (eg, Apache 2.4.25): replace me
PHP version (eg, 7.4): replace me

The issue you are facing: rights are inherited from upper dossier. is it the only behavior possible ?

Is this the first time you’ve seen this error? (Y/N): Always, that’s why i ask if any other possibilities.

Toto is entitled to see Dossier A, then he can see dossier A1 below.
I’d like to tune rights so either i could revoke this right (but it revoke upper rights at the same time) either it doesn’t inheritate.

i know it is rather usage support but in don’t see where to put the question.

Thank you.