Invalid FTP server not working

[azuli1]

phone F2 pro (but i see the issue is on others devices too)

Since the last 3-4 updates FTP via WIFI file transfers are not working.
The procedure time outs as soon as you start moving files.

I tried it with the FTP option from MIUI's file explorer,from ShareMe app and also from some other FTP apps from playstore.
So its not an app bug but a system bug

 

[Igor Eisberg]

I use the FTP server of the built-in File Explorer all the time on Mi 10. No issues.