My comment contributes to the question with an answer used around around here - Don't fix what ain't broke....if the camera is working for your needs, why risk updating it and break something you have?
You mention it was working in a previous update and disappears if you update....so did the update include something you needed? If not, then why bother. If it did, it is worth losing this feature?
I am glad you found a workaround, but for those without an NVR, they would be SOL if they needed what was there previously...
Yes, it is repeated ad naseum and I think everyone gets that. Meanwhile, we're attempting to figure out how the feature relates to versions and can be configured.