Enterprise: Tabs: Add tab is being duplicated after adding and removing

[janahintal]

Describe the bug
Tabs: Add tab is being duplicated after adding and removing

To Reproduce
Steps to reproduce the behavior:

1. Go to http://4190-beta2-enterprise.demo.design.infor.com/components/tabs/example-add-tab-button.html
2. Add a Tab and click '+' button twice
3. Remove 'New Tab 0'
4. Click '+' to add another tab again
5. Click 'New Tab 1'

Notice that the New tab is duplicated and both of them were active when you click it.

Expected behavior
One tab should be active and tab should not be duplicated

Version
v4.19.0 beta2

Screenshots

Platform
All device, OS and browsers.

Additional context
No additional context

[EdwardCoyle]

Most likely, this is an issue with the sample page, which has a counter that handles this

[tmcconechy]

Yeah I think to fix this we should just make sure that there is unit test coverage and either remove this example or label it a test. It seems to generate too many issues because of the possibilities in the demo app.

Also related:
https://github.com/infor-design/enterprise/issues/2350
https://github.com/infor-design/enterprise/issues/2347
https://github.com/infor-design/enterprise/issues/2346

[EdwardCoyle]

@tmcconechy I'm still looking through these, but I'm not certain they're all demo app bugs. Specifically #2346 could be a regression because it used to work, but I'm not sure how long it's been that way (read: not sure we caused it with changes in 4.19.x).

[tmcconechy]

OK sounds good. I'll leave those 3 to you

[janahintal]

QA Passed. Moving to Done.
Tested in http://master-enterprise.demo.design.infor.com/components/tabs/example-add-tab-button.html across all OS, browsers, and devices.