Testing the next release of MIT App Inventor (nb187)

The point here is not whether or not WRITE permission is granted, just whether WRITE is declared in the Manifest. As I said several times, WRITE can no longer be granted under Android 11.

Yes, see also here:

If requestLegacyExternalStorage for Android 10 is not used, then set maxSdkVersion to 28, otherwise to 29.