### Summary It is not possible to merge a MR that depends on a closed MR. ### Steps to reproduce 1. Create a MR (a) that depends on a closed MR (b) 2. Try to merge MR a from Gitlab's UI ### What is the current *bug* behavior? Although all dependencies are merged or closed, Merge is blocked with the following inconsistent message: "Merge blocked: all merge request dependencies must be merged **or closed**."  ### What is the expected *correct* behavior? Merge should be allowed.