Issue Gitlab auto submit MR back to Source Branch

How to Use GitLab
1

Dear everyone,

I’m administrating Hosted Gitlab Server and I am facing an unknown issue when creating a new Gitlab Merge Request. Let’s I describe issued workflow for you :slight_smile:

1. Basic information
GitLab Enterprise Edition 11.7.5-ee

Project X
Branch A

  • file demo.txt
    Branch B
  • file demo.txt

2. Simulate situation
I will describe simple action to show the problem.
Step 1: on project X, I edited file ‘demo.txt’ in both branch ‘Branch A’ and ‘Brach B’ with different content.
Step 2: I created a Merge Request with source is ‘Branch A’ and target is ‘Branch B’.

  • It will appear ‘conflict’ , so I resolve conflict online on Gitlab Web Admin by choosing the side I will keep content of file.
  • When I submit the resolving on Gitlab Web Admin, (not yet Accept Merge Request). Gitlab auto create a merge request with source is ‘Branch B’ and target is ‘Branch A’ (MR back) and auto submit to Branch A.
  • It update the content file in ‘Branch A’ with my surprising .

3. Video demo action case
Link: https://drive.google.com/file/d/1v0-mZ33oBN3QlzIlrS03eg4YLobTIWzD/

It’s my pleasure to get your help and receive some advises from you ASAP.

Best regards.

2

The same issue happened for me. I’d really like to understand why this happens.