After doing some wifi tests on the Disco Wig,i found that once the wifi module is enabled via arudino,it stays on even if the code you upload has no wifi related activity.
I found ut completely destroys the data line that feeds the ws2812b…to fix this..
WiFi.mode( WIFI_OFF );
And upload the code to ure device. Once it runs once, delete that line and uplaod again.