DOF affects Sky with frontal mapping

[diviz]

When using depth of field and a Shader/HDRI in the Corona Sky Object with FRONTAL PROJECTION the bitmap gets blurred.
Spherical and Cubic Mapping - working - not blurred.

win10 c4d21 corona Daily Build 2021-06-05

Thanks

[Atlantis]

Unfortunately DOF also affects the scene/background environment image, which is physically incorrect.
That's the reason I can't use DOF in my architectural visualizations. (or let's say, only with workarounds)