Alter index causes indexer to crash

Environment 2 nodes - kv,n1ql,index and kv,n1ql,index,search and using magma storage for buckets

create an index on node 1 - CREATE INDEX idx on default(join_day) WITH

{'nodes':['172.23.104.110:8091']}

(insert your own node there)

alter index to move to node 2 - ALTER INDEX idx ON default WITH

{'action':'move', 'nodes':['172.23.104.173:8091']}

the query says it has succeeded, however indexer crashes and there is a panic in the logs - attaching screenshot and logs after alter index

Panic seen on .173 and .110 (ran the alter index twice, first run produced a panic and crash in .173 and second run produced a panic and crash on .110):
panic: runtime error: invalid memory address or nil pointer dereference