[Backport 2.8] fix for concurrentmodificationexception with linkedhashmap

[sbcd90]

backports #1255

Issue #, if available:

Description of changes: fix for concurrentmodificationexception with linkedhashmap

CheckList:

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (b887104) 75.18% compared to head (3bfb0fd) 75.33%. Report is 1 commits behind head on 2.8.

Additional details and impacted files

@@             Coverage Diff              @@
##                2.8    #1329      +/-   ##
============================================
+ Coverage     75.18%   75.33%   +0.15%     
  Complexity      116      116              
============================================
  Files           141      141              
  Lines          8422     8426       +4     
  Branches       1204     1205       +1     
============================================
+ Hits           6332     6348      +16     
+ Misses         1480     1471       -9     
+ Partials        610      607       -3     

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