Tabs fullWidth inconsistent with default CSS

[jeffwillette]

• This is a v1.x issue (v0.x is no longer maintained).
• I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

The Tab component has a fullWidth prop, but the default maxWidth in the component implementation is set to 264px
https://github.com/mui-org/material-ui/blob/e221142238ebc5138dbee3c21b05abfbef67489f/packages/material-ui/src/Tab/Tab.js#L14

Current Behavior

Setting the fullWidth prop requires the user to also override the root css if they want a tab width bigger than 264px

Steps to Reproduce (for bugs)

1. https://codesandbox.io/embed/007nxpjz2n
2. make the window wider than 264 * 2 and see that they are not fullWidth

Context

The fullWidth prop is deceiving, had to chase down the unexpected behavior in devtools

Your Environment

Tech	Version
Material-UI	v1.2.2
React	16.x.x
browser	Chrome 67
etc	Sierra 10.13.2

[oliviertassinari]

The fullWidth prop is deceiving, had to chase down the unexpected behavior in devtools

@deltaskelta I'm having a hard time seeing a case where the max-width can be a problem. I would consider it a safeguard against displaying something unusable. Still, I do get the point that it's deceiving. Do you want to work on it?

[jeffwillette]

The case I just had was that I had two tabs in a div that was just a little bit bigger than double the maxWidth. I ran through pretty much all the css on the parent elements before I realized that maxWidth doesn't mean maxWidth.

I am wondering how the lack of maxWidth could deliver something unusable?

I can work on it, but I won't be able to start right away until I finish some other stuff first. Does this maxWidth problem go much deeper than just deleting the css?

[oliviertassinari]

Thanks for the context. A fullwidth tab on a +1000px screen can be challenging to work with. The eye and the mouse has a large distance to travel.
Yes, it should be as simple as handling the CSS issue.

[jeffwillette]

Ok, I'll make a PR soon then. Thanks!

[oliviertassinari]

@deltaskelta Awesome, anytime you want.