I’m a dual Irish and British passport holder, and due to travel from Amsterdam to Slovenia - usually I would travel with my Irish passport but due to circumstances I only have my UK passport available right now. Would there be issues travelling with my UK passport without any entry stamps of me entering the EU/Schengen region? I have a copy of my Irish passport on my phone and so could explain lack of stamps.
For clarity, I live in the Netherlands and am a resident there. When entering/exiting, I always use my Irish passport.