The Hidden Forest

As of today it appears bots don't zone with you - they remain in group and you can disband and respawn then with no timer but they will lose their buffs this way.

Have you tried summoning the bot?

The bot isn't in the zone so no.

In fact, the bot doesn't exist (hence why you get no timer when spawning it again).

I can confirm this bug, it happened to my whole guild on our raid tonight.

Fixed!