My sliding glass door was installed inside out?!?

I am going to be purchasing a new condo, and one thing the inspector noticed was that the sliding glass door opening onto our patio were likely installed inside out — the doors open on the outside, not the inside. The screen is also on the inside. The builders said this is how they came origanlly and it is common for them to be installed this way. Since our condo is on the lower floor and facing the street, we are very concerned about a break in, since the door can not be secured by a bar on the inside. Is this a big deal?!