On Android with tmo if I go near a home depot my phone will hop on their wiri and get a little R next to the wifi signal icon. This R doesn't go away even after

On Android with tmo if I go near a home depot my phone will hop on their wiri and get a little R next to the wifi signal icon. This R doesn't go away even after I go home and get on my home wifi. Can only get rid of it by rebooting the phone.