LoL Client Overlay bug: Not shown when streaming

Nightblue3 was showing the Match History in his stream, and the new map hover boxes were not showing up.

I did a capture of the weird interaction here (1:37 video duration, pretty short): https://www.youtube.com/watch?v=kjdBArTry_E

I would imagine this has to do with GPU layers and how the LoL Client interacts with capturing contexts. I am not sure this is a client bug itself or the way his software is setup. Either way, I think it's worth for Riot to take a look at this, as this streams are very valuable for the community, as well as VODs and many other media that really on capturing the client and / or the gameplay.