I need a sidepanel with Notes and others from O12.

[mod edit: insult removed; stop that or you'll get banned!]

I use 2 or 3 16:10 monitors and this feature is very useful to me.
I will to plan changing to the other browser if this situation doesn't changes.
On this time I STILL use O12.17 and don't want see the newest version.

Sorry for my eng.
Kij wam żyć jeśli tego nie zmienicie.