Dual band wifi connection issue with esp32

[joihn]

Bug
when trying to connect to a dual band wifi (both 2.4ghz and 5ghz under the same SSID name), my esp32 dev kit could not connect (using this example

This might be due to the espressif sdk itself.

Interrestingly, I never encountered that with the esp8266

Workaround
After giving a specific name distinctive to the 2.4ghz, the esp could connect.