Pets disappear

As i didnt find any Thread about this topic, i make my own.
I already acknowledged that pets in general are bugged, be it their dmg scaling, usage of abilities and so on.
I managed to get full control of them through macros and commands, the only annoying thing left for me is they disappear on mounting after a while and have to be resummoned constantly, also they pull all kind of mobs while they follow me mounted.

Im not sure when Blizzard fixed the issue with pets life being at 50% when you mounted off, but im sure at the same time they made pets unitframes permanent.
Is there any information or workaround on this?

i have solved the bugged pets problem with grimoire of sacrifice ;)