Fix viewport breakpoint issue (fixes #409)

[aptiko]

Checklist:

• [ ] All tests are passing
• [ ] I have added any necessary documentation and/or release notes
• [ ] I have followed the commit message guidelines and the "before submitting a pull request" guidelines
• [ ] If I introduced (or abolished) any third-party library, I will write a short paragraph in this PR according to the guidelines
• [ ] I have removed all obsoleted code

[codecov[bot]]

Codecov Report

Merging #410 (71e8268) into master (b98c326) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #410   +/-   ##
=======================================
  Coverage   97.99%   97.99%           
=======================================
  Files          19       19           
  Lines        1444     1444           
=======================================
  Hits         1415     1415           
  Misses         29       29           

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