Wrong server in safe areas

These past few days, I am being frequently sent to the Texas (US) server when going to "safe areas" (e.g. trials, towns, hideout) despite the São Paulo (BR) servers being the closest ones to me. Entering maps with monsters always sends me to the expected servers (BR). Server selection in the main menu is set to São Paulo (BR).

I can't really replicate this issue, as sometimes I'll be sent to the expected servers in the "safe areas" aswell.