Remove of a key with user XAttrs but no system XATTRs fails (with: Internal error. No reallocations should happend when pruning user attributes)

UPSERT INTO lkm VALUES("k01",{"a":1}), VALUES("k02",{"a":1});

BEGIN WORK;

DELETE FROM lkm USE KEYS ["k01", "k02"];

COMMIT;

rpm --erase couchbase-server;rm -rf /opt/couchbase/

rpm -i http://latestbuilds.service.couchbase.com/builds/latestbuilds/couchbase-server/morpheus/1087/couchbase-server-enterprise-7.2.0-1087-centos7.x86_64.rpm

sleep 15

couchbase-cli cluster-init -c localhost --cluster-username Administrator --cluster-password password --services data,index,query --cluster-ramsize 2648 --cluster-index-ramsize 1024

sleep 5

couchbase-cli bucket-create -c localhost -u Administrator -p password --bucket lkm --bucket-type couchbase --bucket-ramsize 256 --bucket-replica 0

sleep 5

/opt/couchbase/bin/cbq -e=127.0.0.1:8093 -u=Administrator -p=password < t.sql

2022-05-02T10:24:40.242977-07:00 ERROR 88: Exception occurred during packet execution. Closing connection: RemoveCommandContext::rebuildXattr: Internal error. No reallocations should happend when pruning user attributes. Cookies: [{"aiostat":"success","connection":"[ {\"ip\":\"127.0.0.1\",\"port\":40890} - {\"ip\":\"127.0.0.1\",\"port\":11210} (System, <ud>@cbq-engine</ud>) ]","engine_storage":"0x0000000000000000","ewouldblock":false,"packet":{"bodylen":8,"cas":0,"datatype":"raw","extlen":0,"frameid":{"durability":{"level":"Majority","timeout":2500}},"key":"<ud>.k01</ud>","keylen":4,"magic":"AltClientRequest","opaque":184549376,"opcode":"DELETE","vbucket":347},"refcount":0}]

2022-05-02T10:24:40.243111-07:00 INFO 84: Client {"ip":"127.0.0.1","port":40884} authenticated as <ud>@cbq-engine</ud>

2022-05-02T10:24:40.243114-07:00 ERROR 86: Exception occurred during packet execution. Closing connection: RemoveCommandContext::rebuildXattr: Internal error. No reallocations should happend when pruning user attributes. Cookies: [{"aiostat":"success","connection":"[ {\"ip\":\"127.0.0.1\",\"port\":40888} - {\"ip\":\"127.0.0.1\",\"port\":11210} (System, <ud>@cbq-engine</ud>) ]","engine_storage":"0x0000000000000000","ewouldblock":false,"packet":{"bodylen":8,"cas":0,"datatype":"raw","extlen":0,"frameid":{"durability":{"level":"Majority","timeout":2500}},"key":"<ud>.k02</ud>","keylen":4,"magic":"AltClientRequest","opaque":117440512,"opcode":"DELETE","vbucket":82},"refcount":0}]