The customer observed that when there are multiple users sharing the same e-mail address removing one of them together with its' parent content object breaks "forgot password" functionality.

Steps to reproduce:
1. Create a folder test1 and a new user inside it (user1).
2. Repeat the above step for test2/user2. The e-mail address must be the same as for user1.
3. Send to trash either test1 or test2.
4. Empty the trash.
5. Go to your_host/admin/user/forgot-password
6. Enter the e-mail that you set for both users.
7. Hit "Reset".

Result:
You will be presented with a similar error:

Could not find 'Content' with identifier 'array (
'id' => '80',
'languages' =>
array (
),
'versionNo' => NULL,
)'

Expected result:
The password should be properly reset.

Note:
The issue isn't reproducible in 3.2.3. On 3.3.0 there is no possibility to assign one e-mail address to more than one user.