3D object from Scene strip is missing when it is driven by animated strip data
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Description

System Information
Win7 64bit

Blender Version
Broken: 2.79

Exact steps for others to reproduce the error
3D scene has an object, its location is driven by Color strip's Y offset (which is keyframed). At some point in time object appears in 3D scene, but not in Scene strip.

Open file - see no object in Scene strip
Go to 3D view and delete driver from plane, OR clear keyframes in Color strip -> Scene strip is working OK

Details

Type
Bug
Philipp Oeser (lichtwerk) triaged this task as Normal priority.Jan 3 2018, 4:33 PM

can confirm this [will have to check if this is a known limitation]

note: also checked with --enable-new-depsgraph but that also seemed to have problems (that first two lines there seem to be the interesting ones...)

add_relation(RNA Bone -> Driver) - Could not find op_from (RnaPathKey(id: SCScene, prop: offset_y'))
add_relation(RNA Bone -> Driver) - Failed, but op_to (OperationKey(t: 4, cn: '', c: DRIVER, n: 'location')) was ok
add_relation(Driver -> Target) - Failed, but op_from (OperationKey(t: 4, cn: '', c: DRIVER, n: 'sequence_editor.sequences_all["Transform Shadow"].blend_alpha')) was ok
add_relation(Driver -> Target) - Could not find op_to (RnaPathKey(id: SCScene, prop: <No Prop>'))
add_relation(Driver -> Target) - Failed, but op_from (OperationKey(t: 4, cn: '', c: DRIVER, n: 'sequence_editor.sequences_all["Transform Balcony"].blend_alpha')) was ok
add_relation(Driver -> Target) - Could not find op_to (RnaPathKey(id: SCScene, prop: <No Prop>'))
add_relation(Driver -> Target) - Failed, but op_from (OperationKey(t: 4, cn: '', c: DRIVER, n: 'sequence_editor.sequences_all["Transform Shadow"].translate_start_y')) was ok
add_relation(Driver -> Target) - Could not find op_to (RnaPathKey(id: SCScene, prop: <No Prop>'))
add_relation(Driver -> Target) - Failed, but op_from (OperationKey(t: 4, cn: '', c: DRIVER, n: 'sequence_editor.sequences_all["Transform Balcony"].translate_start_y')) was ok
add_relation(Driver -> Target) - Could not find op_to (RnaPathKey(id: SCScene, prop: <No Prop>'))
add_relation(Driver -> Target) - Failed, but op_from (OperationKey(t: 4, cn: '', c: DRIVER, n: 'sequence_editor.sequences_all["Gaussian Blur.005"].size_x')) was ok
add_relation(Driver -> Target) - Could not find op_to (RnaPathKey(id: SCScene, prop: <No Prop>'))
add_relation(Driver -> Target) - Failed, but op_from (OperationKey(t: 4, cn: '', c: DRIVER, n: 'sequence_editor.sequences_all["MetaStrip.004"].transform.offset_y')) was ok
add_relation(Driver -> Target) - Could not find op_to (RnaPathKey(id: SCScene, prop: <No Prop>'))
add_relation(Driver -> Target) - Failed, but op_from (OperationKey(t: 4, cn: '', c: DRIVER, n: 'sequence_editor.sequences_all["Alpha Over"].transform.offset_x')) was ok
add_relation(Driver -> Target) - Could not find op_to (RnaPathKey(id: SCScene, prop: <No Prop>'))
invalid driver - sequence_editor.sequences_all["Alpha Over"].transform.offset_x[0]
invalid driver - sequence_editor.sequences_all["Gaussian Blur.005"].size_x[0]
invalid driver - sequence_editor.sequences_all["Transform Balcony"].translate_start_y[0]
invalid driver - sequence_editor.sequences_all["Transform Shadow"].blend_alpha[0]
invalid driver - sequence_editor.sequences_all["Transform Shadow"].translate_start_y[0]
invalid driver - sequence_editor.sequences_all["Transform Balcony"].blend_alpha[0]
invalid driver - sequence_editor.sequences_all["MetaStrip.004"].transform.offset_y[0]

will check more later...