Can't show the tracking alert even disinstalling the app

Hi all, when calling
Code Block
ATTrackingManager.requestTrackingAuthorization

the alert has been shown only the first time.
Right now it doesn't pop up again even if I uninstall the app and reinstall it. What can I do?

Thank all in advance
I haven't tested it, but you could try to execute "Reset Location and Privacy" from the "General > Reset" section in the Settings app.
I have same issue since Beta 3.
I tried solution proposed by ck_mmichel on the newest version of iOS and unfortunately it didn't help.
What is even more interesting, despite that I've installed app, which use AppTrackingTransparency, there is no app in "Privacy -> Tracking"

For additional information, app was build using XCode 12 GM
"Reset Location and Privacy" didn't work for me
luigi0pl 
I think the app would only appear in Privacy > Tracking after the tracking alert has shown to user
just like request notification
I was having this exact issue. Go to Settings -> General -> Reset -> Reset all settings. Your phone will shut down so restart it.

After this step uninstalling and reinstalling the app presented the ATT prompt each and every time.

Also make sure Settings -> Privacy -> Tracking -> Allow apps to request to Track is turned on.
Can't show the tracking alert even disinstalling the app
 
 
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