Bug - Search on boards with a defined iteration
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### Summary
We have a Gitlab board, where we have configured an iteration. We have two iteration cadences for the group, and the one configured for the board has ID 1. When I navigate to the board using the URL `.../boards/48?group_by=epic&iteration_id=Current&iteration_cadence_id=1&types[]=ISSUE&types[]=TASK` and I change the iteration in the search bar, no issues are shown. It doesn’t matter if I remove the shown iteration from the search bar or put in a new one, no issues are shown.
The behavior is only like that when navigating to the board by using said URL. If I navigate through the sidebar to the left, I can change the iteration in the search bar, and the correct issues will appear.
### Steps to reproduce
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### Example Project
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### What is the current _bug_ behavior?
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### What is the expected _correct_ behavior?
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### Relevant logs and/or screenshots
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### Output of checks
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#### Results of GitLab environment info
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<pre>
(For installations with omnibus-gitlab package run and paste the output of: \`sudo gitlab-rake gitlab:env:info\`) (For installations from source run and paste the output of: \`sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production\`)
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#### Results of GitLab application Check
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(For installations with omnibus-gitlab package run and paste the output of: `sudo gitlab-rake gitlab:check SANITIZE=true`)
(For installations from source run and paste the output of: `sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true`)
(we will only investigate if the tests are passing)
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### Possible fixes
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### Patch release information for backports
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Refer to the [internal "Release Information" dashboard](https://dashboards.gitlab.net/d/delivery-release_info/delivery3a-release-information?orgId=1) for information about the next patch release, including the targeted versions, expected release date, and current status.
#### High-severity bug remediation
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