As you can see I'm using the latest version of WP.
A few of my main blogs use Custom Fields all the time and for the first time today, when trying to set the value for a Custom Field, I click "Add new" (or 'add field', forgot how it is worded) and it just doesn't register or acknowledge somehow.
Normally if you "Add" the value, the next blank Custom Field dialog would come up, but not anymore for me.
I don't know what it is, tried Firefox and Chrome both, so it is not a browser thing, tried to re-install WordPress. Could it be that I accidentally toggled a setting on/off somewhere?
VIDEO RECORDING OF MY PROBLEM HERE: http://www.blizzardgamesnews.com/custom-fields-problem.mp4
Thanks for reading.