Non instanced subobject gets set to none after compiling editor

Non Instanced Subobject sets to none after compiling the blueprint. Please see attached video for more details.

Checking regression in 4.26 now

1. Open QAGame in UnrealEditor
2. Open the blueprint QABP_SubobjectTester_Defaults
3. Set Non Instanced Subobject to QABP_SceneComp
4. Compile the blueprint

Results: Non Instanced Subobject sets to none

Expected: Non Instanced Subobject remains set to QABP_SceneComp

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