The problem I have is that when I animate the rotation of the HDRIBackdrop in Sequencer, the backdrop rotates and the geo-dome inside the BP rotates also (checked with wireframe) but the HRDI image stays static (does not update any light reflected) when all the BP is rotating.
If I am not in sequencer, the HDRIBackdrop rotates nicely (image included) as it should. Any clues?
I was having this same problem when trying to light multiple angles for an Archvis project. Took far too long to figure out that the rotation need to happen on the material level. Luckily sequencer has material animation abilities. When tracking your HDRIBackdrop to your sequence make sure to track the geometry component and then track the material parameters. This should allow you to set keys for the HDRI_Angle and thereby adjust your hdri within sequencer. Hope this helps someone.
Super useful piece of information.
Thank you very much !!!