Are you talking about this: https://forums.daybreakgames.com/dc...r-hotfix-january-20-2016.266870/#post-3553112 They fixed pets to not be able to spawn multiple ones that are of type Totem.
Nope, the Totem pets don't stay after being summoned. They'd stay, as the OP said, for only 2 seconds. They seem to be the only one affected, since my other pet stays up longer than 2 seconds.
Confirming this. Only seems to be affecting Tiny Demon Totem. All other Totems and Devices remain active.