Tooltip on action buttons

Hello
I've like to add tooltips using angular-material too action buttons.
However these seems not to be working.
There is a problem, probably with sanitizing html. In console i have "WARNING: sanitizing HTML stripped"
Would be great for any help or assists.
Thank you
```
actions: {
add: false,
columnTitle: "Opcje",
custom: [
{
name: 'view',
title: ''
}
]
},
edit: {
confirmSave: true,
editButtonContent: '',
saveButtonContent: '',
cancelButtonContent: '',
} ,
delete: {
confirmDelete: true,
deleteButtonContent: ''
} ,
```