Still no connection on first start and show IP 0.0.0.0 on Serial port

[jirmjos]

First all, really a good job this FSBrowserNG library, and so many thanks to @gmag11 to share it.

For a long time I am looking for a base platform for my projects based on ESP8266 that includes the features that are precisely all collected in this great library.
The problem is that already in the first attempt I have not been able to start.
Both the sample skectch included in FSBrowserNG and a project based on the same library "https://github.com/species5618/MQTT_Thermometer_ESP-01" behave in the same way and is something that I have seen reported in previous issues, but seems without a resolution at the moment.

The compilation is done correctly but at the first start no connection is established with the AP and the ESP does not seem to get IP of dhcp (at least I can not observe any assignment in the log of the AP router) and neither is access to the pages configuration of the web server to allow the editing of the connection parameters so it remains in a loop trying to reconnect to mqtt that of course permanently (obviously I do not have a correct IP address to reach the ESP from the browser). The described is mainly information extracted from the debug output messages on serial port, which also indicates that the IP 0.0.0.0 is achieved by the ESP.
ESP STA seems up (I can see a new ESP123456 station ) but once connected to it I cannot access to its server web pages.
My ESP core is the current stable last 2.4.2 version and I have followed the documentation without any success.
Any recommendation to be able to diagnose and solve the problem ???

Happy Holidays!
Thank you