user bug

[deathmorlock]

Hello bro.
Found strange bug. Installed Wordpress 5.2 for testing.
Create user admin 12345 - scrypt works fine

Create user sergo 123456 - scrypt doesn't work
Make direct POST from Burp - all works fine.

All users just newly created in wp-admin. Both have administrator role.
http://prntscr.com/s0cayr
http://prntscr.com/s0ckdp
tried many times - result is stable.

Changed admin pass to 123456 and scrypt stop finding his pass.
Сhanged sergo pass to 123 scrypt doesn't work
Сhanged sergo pass to 123456 scrypt doesn't work

At same time direct POST with Burp works fine.

[deathmorlock]

Oh , it is a bug (or fix) of response on multicall post - after first wrong login:pass all next in response are wrong (even if they are right). Such brute is useless