Single-pass render issues (v4.3)

[Nosferatu]

Not sure where to post this one, so placed it here. I have issues with VR and single-pass rendering in v4.3. Using ORBX after a while scenery block mapping appears incorrect. If I switch back to stereo it slowly readjusts, but once back in single-pass it eventually does it again. I see squares of incorrect terrain appearing randomly around the landscape. Single-pass is a must have for good frame rate in VR, will it be possible to fix in v4.4?