I have seen it many times. Something similar happens in raid with deathmark.
If he is stealthed and an ally drops below 50% health, he will taunt, gain the taunt icon and, lose the stealth icon. His character will stay shaded looking like he is stealthed.
If when it is his turn again and teebo leader triggers on him he will stealth and loose taunt.
I have no idea if any of this is working as intended.
Replies
Stealth will over write taunt.
Look at icons above the character. You will only see one either stealth or taunt.
I feel he shouldn't have been able to do that
If he is stealthed and an ally drops below 50% health, he will taunt, gain the taunt icon and, lose the stealth icon. His character will stay shaded looking like he is stealthed.
If when it is his turn again and teebo leader triggers on him he will stealth and loose taunt.
I have no idea if any of this is working as intended.
You can always screenshot and submit to bugs.