Nested JQLIssuesCount aren't resolving correct mappings

#{for i= JQLIssuesCount|clause= issuekey in (EPIC-10, EPIC-11, EPIC-12) order by Key} 
1 - ${JQLIssues[i].Description} - ${wiki:JQLIssues[i].Description}
#{for j=JQLIssuesCount|clause=issuekey in linkedIssues(${JQLIssues[i].Key}, "is Parent of") order by Key}
2 - ${JQLIssues[j].Description} - ${wiki:JQLIssues[j].Description}
#{end}
#{end}

has this type of output (only first level}:

1 - epic 10 desc +ertsbrtdbrtb+ - this is the epic-13 description 
1 - epic-12 description _italic_ - epic-12 description italic
1 - this is the *epic-13* description - this is the epic-13 description 

1 - ${JQLIssues[i].Description} - ${wiki:JQLIssues[i].Description}

is replaced by

1 - epic 10 desc +ertsbrtdbrtb+ - this is the epic-13 description