One node crashed (beam.smp) after view load was going in parallel with stop/start rebalance

Attaching diags from the 4 nodes, 5th node crashed and generated beam coredump.
replica 2

Steps:-
1) Load view was in progress.
2) Rebalance out 3 nodes, stop rebalance after 20 secs. Do this again.
3) Try to get view results.
4) One node goes down.

Some more errors from the diags on the admin ui.
Server error during processing: ["web request failed",

{path,"/pools/default/tasks"}

,

{type,error}

,
{what,{badmatch,false}},
{trace,
[

{ns_doctor,task_operation,3}

,

{ns_doctor, '-do_build_tasks_list/2-fun-2-',2}

,

{lists,foldl,3}

,

{dict,fold_bucket,3}

,

{dict,fold_seg,4}

,

{dict,fold_segs,4}

,

{ns_doctor,do_build_tasks_list,2}

,

{menelaus_web,handle_tasks,1}

]}]