Jessie my 6 month old Havanese slipped out the door and ran to the front yard. I immediately called her and she acknowledged me, started to come then saw a neighbor walking and took off after her. Paid no attention to my calling running right out into the street. Thankfully, my neighbor stopped and I was able to catch up and scoop Jessie up. What a scare! We have worked on come and stay with success but without any real distractions. Don’t know how to train her to avoid this situation. Any suggestions would be helpful!
Of course it is good to continue working on this with slowly increasing distractions. But it is ENTIRELY understandable that a 6-month-old would not have a solid enough recall, ESPECIALLY in the face of distractions, to avoid this. I hope you are also working on "door manners" (you don't cross the door sill until I give you permission) and "wait" (you stay right where you are until I tell you to move) But these, also, will take time, especially in more distracting or exciting environments.
Probably for at least the next year, the SAFEST thing is management. In our house, our front door comes into an entry, with an opening into the main part of the house. We have a gate across that entry, so the dogs cannot approach the door. (it started for safety for puppies and has remained because it's too much fun to sit in the entry and bark at turkeys under the oak tree across the driveway!
If you don't have a "natural" place to gate your puppy away from the door, another option is to put an ex-pen around the entrance. You can get ex-pens with gates through them to make it a little easier on the humans. If neither of these options feels workable, then you MUST get everyone in the household in the habit of either putting the puppy in a safe location or on a leash before answering the door. My dogs are always gated in my office when we are out, but a crate or ex-pen is fine too. ...Or leave a martingale style collar with an attached leash on the handle of every door to the outside. Then, when you approach the door, and the puppy appears, you can slip it over her head quickly and be in control.
A lot of what we do with puppies in the first couple of years needs to be management until the training becomes REALLY solid.