Account Management: You can create a tag with an already existing name by editing another tag

Steps:

1. Go to Account Management
2. Click a client’s name
3. Click the “Manage Tags” button
4. Create a new tag
5. Click the pencil icon next to an existing tag's name
6. Edit the entry - change the name into an already existing one (see video)
7. Click the "accept" icon

Expected result:

There is a notification and the tag is not created.

Actual result:

There is a notification but the tag is created. You can edit both tags at once (see video).