allow pull requests only

Hi,

I have configured the following settings in my bitbucket repo:

1. Project > Settings > Permissions > Default Permission (=No access)
2. Project > Settings > Permissions > All users/groups except the Admin users/groups should be granted Read access
3. Repository > Create branch > develop (branch-type: Custom, branch-from: develop, branch-name: develop)
4. Repository > Repository permissions > All users/groups except the Admin users/groups should be granted Write access
5. Repository > Branch permissions > Add permissions > Branch name (=master) , Restrictions (=Prevent changes without a pull request)
6. Repository > Branch permissions > Add permissions > Branch name (=develop) , Restrictions (=Prevent changes without a pull request)
7. Repository > Settings > Repository details > Clear the checkbox to prevent forking of this repository
8. Repository > Settings > Pull requests > Requires N approvers (see to-be-reviewed-by list below)
9. Repository > Settings > Pull requests > Unapprove automatically on new changes
10. Repository > Settings > Pull requests > Requires all reviewers to approve the pull request
11. Repository > Settings > Branching model > Development (=develop)
12. Repository > Settings > Branching model > Enable automatic merging

I would like to allow pull requests only on brach develop:

I believe that the problem is  that "Push latest changes from local to remote" is enabled and is not-editable option. (see attachment 01.png)

Please note that the following option ("Push changes immediately to origin/develop") is enabled when I do commit, although I am not sure if it plays a role (see attachment 02.png)

The error message I am getting is:
remote: Branch refs/heads/develop can only be modified through pull requests.        remote: Check your branch permissions configuration with the project administrator.
Could you please advise on how to setup the pull-request only workflow in bitbucket using sourcetree ?

NOTE:

It seems that the same issue was described in SRCTREE-1798

Issue has been filed also here: https://community.atlassian.com/t5/SourceTree-questions/allow-pull-requests-only/qaq-p/587001

Would you be so kind to make this a high priority as while the hosted Bitbucket server that our company uses allows all requests only policy, but the SourceTree does not, which is confusing and this functionality is a must in establishing a workflow in a big corp. 

Would you be so kind to provide an estimated date for the fix ?

Please let me know if you need any additional information.

with kind regards,

Nikos