Fix bug where seed was not set for manual initialization

[oyvindeide]

Issue
Resolves #my_issue

Approach
Short description of the approach

(Screenshot of new behavior in GUI if applicable)

• PR title captures the intent of the changes, and is fitting for release notes.
• Added appropriate release note label
• Commit history is consistent and clean, in line with the contribution guidelines.
• Make sure tests pass locally (after every commit!)

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Create Backport PR to latest release

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.17%. Comparing base (4749629) to head (ec21edc).
Report is 2 commits behind head on version-10.2.

Additional details and impacted files

@@               Coverage Diff                @@
##           version-10.2    #8538      +/-   ##
================================================
- Coverage         87.20%   87.17%   -0.03%     
================================================
  Files               379      379              
  Lines             23637    23637              
  Branches            621      620       -1     
================================================
- Hits              20612    20606       -6     
- Misses             2947     2950       +3     
- Partials             78       81       +3     

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