renovate tries to merge a pull request over and over again but it is already merged

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Hey! Loving the bot so far but somehow I get a weird behaviour.
The Bot tries to merge a pull request over and over again ignoring that it is already merged. This consumes my scheduled bot runs via gitlab. Nothing happens after that even when there are still dependencies that need updates.
Does someone experienced this behaviour aswell?

I use this image version:
renovate/renovate:37.440-slim@sha256:1ee424e0ed4d8e64e5bb2d442d6bc72b3809bb9d0cf804f4b7180caa47d6002a

In the logs i get these messages several times, but i dont think they are related - or are they?
DEBUG: Reached branch limit - skipping branch creation
DEBUG: syncBranchState(): Branch cache not found

And have the configured as:

{ "$schema": "https://docs.renovatebot.com/renovate-schema.json", "packageRules": [ { "labels": [ "renovate-bot" ], "matchDatasources": [ "npm" ], "matchPackagePatterns": [ ".*" ], "rangeStrategy": "pin" }, { "labels": [ "renovate-bot" ], "includePaths": [ "pom.xml" ], "matchDatasources": [ "maven" ], "matchPackagePatterns": [ ".*" ] }, { "matchUpdateTypes": [ "minor", "patch" ], "automerge": true }, { "matchUpdateTypes": [ "major" ], "automerge": false } ], "ignoreUnstable": true, "minimumReleaseAge": "7 days", "enabledManagers": [ "maven", "npm" ], "dependencyDashboard": true }

Any help is appreciated :)

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[statusreport-renovate]

I think a got a workaround.
I created a branch with the same name renovate tries to merge. Then i created a merge request from this new branch and ran the bot again. Now renovate thinks that this branch /merge request is not its concern because I created it and continues as expected.