Issue DELETEs not replicated across cluster indexes

Issue Summary

This is reproducible on Data Center: yes

Since Jira 8.12 all entities (including issues) are versioned, i.e. each indexing operation on an entity has a unique version which is used to resolve conflicts and have a consistent state of data across all nodes and the DB.

Is it possible to have a DELETE issue indexing operation (with version X) followed by a reindex (UPDATE, UPDATE_WITH_RELATED) of an issue where an issue document may be created with the same version as the DELETE operation. This may cause in some situation the reindex (of a deleted issues) to win with the de-index operation.

Steps to Reproduce

1. In a cluster with 4 nodes create an issue with 1000 subtask
2. Just after creation delete the issue

Expected Results

The issue and all sub-tasks should be removed from the DB and all indexes (across all nodes).

Actual Results

Some sub-tasks may still be present on some indexes.

Workaround

Only full-reindex can fix indexes across the cluster.