Fix unknown secondary tag behavior

[goccy]

resolve #567

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.41%. Comparing base (5d22eed) to head (b8cbdbc).
Report is 1 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #572      +/-   ##
==========================================
- Coverage   77.46%   77.41%   -0.05%     
==========================================
  Files          21       21              
  Lines        7482     7479       -3     
==========================================
- Hits         5796     5790       -6     
- Misses       1291     1293       +2     
- Partials      395      396       +1