Liquibase 3.6.3 ChangeLog SQL Server missing some <createIndex/> elements

Liquibase (3.6.3) ChangeLog for SQL Server misses a small subset of createIndex elements. That is, they are missing when compared to the db install scripts. Identical flow produces correct results (all createIndex tags) for Oracle and PostgreSQL. All missing indexes are non-unique, non-primary key and defined by single columns. However, not all indexes with these properties are missing. Have not established a unique pattern for the missing indexes.