I am experiencing this potential problem with ESP-01S ESP8266 module. I am controlling it via Atmega328 micro-controller. Issue occurs when it is configured as both soft AP and a station and when trying to connect to an AP which does not exist. While the connection attempt is in progress, if I connect another device to ESP's soft AP, the connecting device sometimes fail to get an IP address or even fails to get the connection.
Is this expected behavior?