This is a bit of a weird one. For some reason, I can create a tag called "security", but I can not create nested tags under "security". I have a secure note that I am using a temp entry. If you recall, I had trouble before with the order of required steps to make nested tags. This is my process order:
Could you test this on your end and see if you can replicate? Tonight I recreated the old 1PW4 folders and replaced existing tag groups using a nested "category" tag, and I had no problem. I thought I was comfortable with this aspect of the new app version. For some reason when attempting this, I am just not able to make nesting work with the words "security" and "secretanswer".
See attached screen print. You can see I was able to do nested tags under "problem" no problems. After spending 15 minutes writing this up a second idea occurred. Maybe the issue is that I'm trying to nest 30 entries at once?
1Password Version: 1Password 7.0.541
Extension Version: Not Provided
OS Version: Winn8.1
Sync Type: Dropbox