I could see the preinstalled system apps under "My Apps", it updated automatically... All O.K.
Then I updated to Android 4.4.2, unlocked bootloader, root and it still works fine.
A few days ago I decided to do a Hard Reset (Wipe Data/Factory Reset "Fastboot Mode").
When it was done, I decided to create another Google Account to buy apps, sync chrome, etc. because I use the other one as work email.
When I entered Google Play to see why preinstalled apps (Hangouts, Gmail, Play Music, etc.) wasn't updating automatically, in "My Apps", under "Installed" there's a loading wheel that never ends, and under "All" there's no app listed.
If I install an App, it appears on both lists (Installed and All), but the others don't.
When I search manually system apps, it says that it's installed and let me update, and after that, it appears on both lists.
I want to fix that: Apps not appearing in "My Apps" unless that I update those Apps, despite I have them installed in my Nexus 5.
Thank you, and sorry for my english