Editing another user's profile makes user_id to disappear

[Cimmo]

This seems a regressions since 2.8.6, not sure if intended, anyway here the use case:

1. login with admin (user_id=1)
2. edit another profile (user_id!=1)
3. remove email (not allowed)
4. save changes

result:
$_GETuser_id?=1 instead of the id of the profile's user_id.

I know I can check for $_POSTuser_id? but why this change?

[Cimmo]

Sorry I wanted to say:
$_GETuser_id? is absent, in WP 2.8.6 was present.

[nacin]

Sounds like this is related to #11222 #11271 [12288] [12267] [12300].

[nacin]

False alarm, it's actually related to [11830]. Because it's receiving the user_id via POST, I'm inclined not to "fix" this again. The global $user_id will always contain the ID being edited.