No permission to open file on Android with Qt 5.15

[Passi]

Hi,

I want to open a PDF file in Qt 5.15 on Android. I use

QDesktopServices::openUrl(QUrl(file));

to open the file. In Qt 5.15 this function should work on Android. (Bugfix from here: QTBUG-45585)
Unfortunately I always get the error:

Qt JAVA : openURL(): No permissions to open Uri

If I test the permissions:

qDebug() << "file: " << file;
QFile f(file);
qDebug() << "file exists: " << f.exists();
f.setPermissions(QFileDevice::ReadUser | QFileDevice::WriteUser);
qDebug() << f.permissions();

I get the following:

/storage/emulated/0/Documents/doc.pdf
file exists:  true
QFlags(0x20|0x40|0x200|0x400|0x2000|0x4000)

I have set android permissions for READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE in manifest.xml and also proofed the permission by:

QtAndroid::PermissionResult r = QtAndroid::checkPermission("android.permission.READ_EXTERNAL_STORAGE");
 if(r == QtAndroid::PermissionResult::Granted) 
...

If I generate a FileDialog to open the PDF there is no issue - the file opens normally.
Does anyone have an idea or has anyone solved a similar problem?

Thank you.

[Passi]

I opened a bug about this issue: QTBUG-85011