Lisa HyperOS 2.0.6.0 Bug: Can't set custom notification sound for apps

[AnthoMes]

Hello.

I've spotted a bug in HyperOS 2.0.6.0 for Lisa. I can't customize the sound for app notifications. In any app's settings menu, in the Notifications section, when I try to change the default sound for a specific notification, the app crashes and returns to the previous menu. It seems that the link between the "System Settings" app and the "Sounds" selection app is broken. Here's the error message:

java.lang.NullPointerException: Attempt to
invoke virtual method 'android.content.Intent
android.content.lntent.putExtra(java.lang.String,
android.os.Parcelable)' on a null object reference
at
com.android.settings.RingtonePreference.onPrepar
eRingtonePickerlntent(Unknown Source:6)
at
com.android.settings.notification.MiuiNotificationSo
undPreference.onPrepareRingtonePickerlntent(Unk
nown Source:0)
at
com.android.settings.notification.ChannelNotificati
onSettings.onPreferenceTreeClick(Unknown
Source:10)
at
com.android.settings.core.InstrumentedPreference
Fragment.lambda$onStart$o(Unknown Source:14)
at
com.android.settings.core.InstrumentedPreference
Fragment.
$r8$lambda$gMtE7oNRmpEsdAfgQnia9-2e5q4(Un
known Source:0)
at
com.android.settings.core.InstrumentedPreference
Fragment$
$ExternalSyntheticLambda0.onPreferenceTreeClick
(Unknown Source:2)
at
androidx.preference.Preference.performClick(Unkn
own Source:39)

Tried to reset phone with format data. The issue is present on a blank new installation without any custom configuration...

Any idea to solve it?

Thank you.