Event Scheduler memory leak

When using MySQL Event Scheduler, a memory leak was detected. In production environment in 72 days, with one task of the scheduler, memory leak is about 30 GB.
The problem is identified in versions 8.0.18-9 and 8.0.19-10
The attachment contains a docker image to reproduse the problem.

Docker image contains:

• Mysql 8.0.18-9
• New Db
  CREATE DATABASE serverStatus CHARACTER SET utf8mb4;

• 100 empty events
  create event
  updateReplicationHeartbeatEvent[0-99]
  on schedule every 1 second starts current_timestamp
  on completion preserve
  enable
  do
  begin
  • empty event
    end

Reproduse instructions
1) Collect and launch the docker image
docker-compose up --build

2) View the initial state of memory
docker exec -it mysql mysql -u root -proot -e "SELECT SUBSTRING_INDEX(event_name,'/',2) AS code_area, SUM(current_alloc/1024/1024) AS current_allocMb FROM sys.x`$memory_global_by_current_bytes GROUP BY SUBSTRING_INDEX(event_name,'/',2) ORDER BY SUM(current_alloc) DESC;"
Result out:
mysql: [Warning] Using a password on the command line interface can be insecure.
------------------------------------------+

------------------------------------------+

------------------------------------------+
Remember or write value memory/sql = 3.96931836 MB

3) Enable Event Scheduler
docker exec -it mysql mysql -u root -proot -e "SET GLOBAL event_scheduler = ON;"

4) After 35 min see memory usage
docker exec -it mysql mysql -u root -proot -e "SELECT SUBSTRING_INDEX(event_name,'/',2) AS code_area, SUM(current_alloc/1024/1024) AS current_allocMb FROM sys.x`$memory_global_by_current_bytes GROUP BY SUBSTRING_INDEX(event_name,'/',2) ORDER BY SUM(current_alloc) DESC;"
Result out:
mysql: [Warning] Using a password on the command line interface can be insecure.
------------------------------------------+

------------------------------------------+

------------------------------------------+
memory/sql allocated 892 MB memory

5) Detail
docker exec -it mysql mysql -u root -proot -e "select event_name,current_alloc/1024/1024 from sys.x`$memory_global_by_current_bytes where event_name like 'memory/sql%' order by 2 desc limit 10;"
Result out:
mysql: [Warning] Using a password on the command line interface can be insecure.
---------------------------------------------------------+

---------------------------------------------------------+

---------------------------------------------------------+

6) Disable Event Scheduler
docker exec -it mysql mysql -u root -proot -e "SET GLOBAL event_scheduler = OFF;"

7) See memory usage
docker exec -it mysql mysql -u root -proot -e "SELECT SUBSTRING_INDEX(event_name,'/',2) AS code_area, SUM(current_alloc/1024/1024) AS current_allocMb FROM sys.x`$memory_global_by_current_bytes GROUP BY SUBSTRING_INDEX(event_name,'/',2) ORDER BY SUM(current_alloc) DESC;"
mysql: [Warning] Using a password on the command line interface can be insecure.
------------------------------------------+

------------------------------------------+

------------------------------------------+
memory/sql allocated 4 MB memory