If you disable show flags in a SceneCapture2D component of a Blueprint, trying to re-enable them in the Blueprint will not update instances in a level. Anything that was left alone will change along with the blueprint.
Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6063286, 4.23 CL# 6395561
The Show flags edited before placing the instance into the level will not update with the blueprint, however the ones left alone will update the instance as they are changed
The instances would update along with the Blueprint
Don't make changes to show flags before placing an instance into your level
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-74766 in the post.