Fess 11.2.1 is now available as a bug-fix/update release.
Fixed issues are #1127, #1126, #1130, #1124, #1123, #1122,
#1121, #1120, #1118, #682, #1108 and updated to elasticsearch 5.4.2.
All feedback and contribution is welcome.
Note: Update to Elasticsearch Analysis Fess plugin 5.4.2.