Cannot unsubscribe from notifications for a project

Summary

I tired to unsubscribe from receiving notifications from https://gitlab.xfce.org/panel-plugins/xfce4-whiskermenu-plugin several times, but I still continue to receive emails.

Steps to reproduce

In the project page I clicked the notifications settings dropdown box and selected "Disabled"
I continue to receive emails.

Example Project

https://gitlab.xfce.org/panel-plugins/xfce4-whiskermenu-plugin

What is the current bug behavior?

I continue to receive emails even after disabling notifications.

What is the expected correct behavior?

Do not receive notifications after disabling notifications

Relevant logs and/or screenshots

Please see the attached screenshots.

Output of checks

This bug happens on https://gitlab.xfce.org/panel-plugins/xfce4-whiskermenu-plugin

Results of GitLab environment info

Expand for output related to GitLab environment info


(For installations with omnibus-gitlab package run and paste the output of:
`sudo gitlab-rake gitlab:env:info`)

(For installations from source run and paste the output of:
`sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)

Results of GitLab application Check

Expand for output related to the GitLab application check

(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)
(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)
(we will only investigate if the tests are passing)