Not connecting to WIFI correctly

[species5618]

raising this mainly as a discussion point , and collect information

i recently rebuilt my laptop, and fully updated all the libraries
esp8266 2.4.0 and all the latest Async ESPWebserver libraries

now almost every time the device connects to wifi, gets an IP address, and pings,
but the code is convinced the connection is not working , so sits in the

while (!WiFi.isConnected()) {
    delay(1000);
    DBG_OUTPUT_PORT.print(".");
}

loops at line 580 in FSWebServerLib.cpp

i have compiled the sample asyncwebserver sample which runs with out issue
so i think that is a subtle change i the wifi event handling

more to follow

[species5618]

updated wifi connection hold process based on code from latest espwebserver example