When creating new user - passwords do not match

I am using Set Password plugin, to enable users to set-up their own password upon site registration. When I submit first part of registration everything seems fine, but when I submit the second part (Site Domain and Site Name) I get the error about the password mismatch.
When I look at the source code I can see a hidden field password_1 with my password, I believe I should be seeing password_2 field as well, right?