@oliviertassinari following the release of 1.4.1 there is a new issue where if there is an item that can be clicked and focused (e.g. a button or radio button) the tooltip no longer disappears.
https://codesandbox.io/s/qjxo6nv7w
Tooltip should disappear when mouse is moved away after click.
The tooltip doesn't disappear.
In sandbox:
https://codesandbox.io/s/qjxo6nv7w

| Tech | Version |
|--------------|---------|
| Material-UI | v1.4.1 |
| React | v16.3.2 |
| browser | Chrome |
It's a feature: #12131
Great, is that what disableFocusListener is for?
Yes
I would suggest that this be set to true by default. It seems nonsensical behaviour for simple button icons, and means people need to spend some time Googling their way to this page to resolve it (it's difficult to interpret this behaviour from the docs alone) .
@rooch84 For reference, Bootstrap is using the same default: https://getbootstrap.com/docs/4.1/components/tooltips/#examples.
Most helpful comment
Great, is that what disableFocusListener is for?