Pipelines must succeed option behavior has changed
Summary
Pipelines must succeed option behavior has changed
Steps to reproduce
With Gitlab 12.0.3-ee.0 if the option "Pipelines must succeed" was set and no Jenkins pipeline (I guess also true with Gitlab pipeline) was defined, then it was possible to merge a merge request
With Gitlab 12.2.4-ee.0 with the same conditions it is no more possible to merge a merge request. Moreover nothing into the UI explains clearly why it is not possible to merge
Cf "Relevant logs and/or screenshots" section
Example Project
What is the current bug behavior?
See "Steps to reproduce" section
What is the expected correct behavior?
Either go back to the behavior of version 12.0.3-ee.0, or improve UI display to explain that it is not possible to merge because no pipeline is defined
Note that the only ticket related to "Pipelines must succeed" that I have found is https://gitlab.com/gitlab-org/gitlab-ce/issues/64461 But the problem is slightly different and not already delivered
Relevant logs and/or screenshots
UI when the option is set
UI when the option is not set
Output of checks
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