So this is more of a "to let you know" than a question....
[Edit 1: I've inadvertantly told a lie The security update wasn't alone as there was also a cumulative update: KB4598242 which improves security for external devices and when windows does basic operations]
So a security update has broken a function within the gigabyte realtek audio settings where one could have separate audio for speakers to your headphones. The issue is that this update has screwed up jack detection meaning nothing will play out of the rear
audio jack (the front headphone jack is fine) due to a dialogue box box not appearing asking you to specify what was plugged in.
Simple solution go into realtek settings and turn off front panel popup dialogue. This means, as far as I can tell, windows won't prevent audio from a source until it's identified and will instead just let things play immediately.
A very specific problem I know but often it's the specific ones you don't get an answer to...
Sorry for rambling.
