Can I use older MySQL workbench with newest MySQL server?
In  my experience workbench 6.3 works only bad with mysql server 8.0.(it can not use the new authorisation)
The same goes for workbench 8.0 and the old Server version, some things work other not. You get also a warning when you connect.
So i have installed a Mysql 8 version and have a 6.3 in a vm, which i use to access 5.x server.