[Clean Feed]

I wonder if the logo not disappearing might have actually been a deliberate choice on this occasion, given the visual treatment involved. Normally when the graphics disappear it's behind solid objects which have a nicely defined edge. However the particular visual effects added here results in a fuzzy and jittering edge to those same objects. So to try and still have the ONE disappear behind that, you'd either be having to have the edges of the logo jittering too, or have it acting as though it was still against a solid edge - neither of which sounds like would probably work too well.

If the "security camera" effect was added at the end of the process - and was therefore also applied to the BBC blocks, "ONE" and "Subtitles" text - there would've been no issue.

However, think they probably made the right decision to have the channel branding and "Subtitles" text displayed clearly - and not subject to the security camera effect.