1st) Elixirs go on cd when you buy while dead instead of waiting you to respawn.
Zombiemaster1 votes1.) This is intended. Buying an elixir while dead will consume it and the time left until you respawn is added to the duration, so you still get the full duration of the elixirs.
2.) I don't know.
Kledy McKledFace1 votes1.) This is intended. Buying an elixir while dead will consume it and the time left until you respawn is added to the duration, so you still get the full duration of the elixirs.
2.) I don't know.
Zombiemaster1 votesNo, the cooldown does not refresh. Instead, the duration is just extended by the amount of time you are dead. If you don't believe just take a look at the 6.1 patch notes here.