[Backport 2.7] Fix keywords bug incorrectly adding field value (#964)

[jowg-amazon]

Description

Manual backport of #964

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 27.73%. Comparing base (0f8369c) to head (062f34c).

Additional details and impacted files

@@             Coverage Diff              @@
##                2.7     #969      +/-   ##
============================================
- Coverage     27.77%   27.73%   -0.04%     
+ Complexity      902      901       -1     
============================================
  Files           231      231              
  Lines          9495     9490       -5     
  Branches       1081     1081              
============================================
- Hits           2637     2632       -5     
  Misses         6623     6623              
  Partials        235      235              

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