If multiple child tabs are opened simultaneously, only one of them works correctly.

[Punit-wingify]

Steps to replicate:

1. Create a button on parent window which can open a new child tab.
2. Ensure that 'data-tab-opener' isn't used on that button.
3. Click that button multiple times at the same time.
4. Ids/references will be assigned to the first tab which initiated the handshake and not to the rest resulting in incorrect behavior.

[jpike88]

Wow why?

[SenthilKumaranC]

Same thing happening to me. Now added delay between tab opening , it works fine.