I imagine it would be seen as having left (given up your ground) and then returned thereby entering the other person's ground. I'm pretty sure even without stand yiur ground if you are in an altercation, leave, and return, it's seen as you are now the aggressor.

I've seen this happen with fights without weapons involved (both in real life and shows like Live PD), and the charges are always serious if they left and came back, most especially with a weapon.

Are you arguing that stand your ground should protect someone who leaves a dangerous situation coming back with a gun?

I’m arguing if you are bring threatened in your own home you should have the right to go to another room to get a weapon to defend yourself.