@Doncho Borisov Thanks for posting in our Q&A.
From your description, I know that the policy is deployed successfully, but it seems not work. Please understand that intune just deploy policies and what it works is based on app itself. Given this situation, it is needed to check some logs based on your environment. With Q&A limitation, it is suggested to create an online support ticket to get more help. Here is the support link:
https://learn.microsoft.com/en-us/mem/get-support
Thanks for your understanding.
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