Hello,

did anyone experience that a term like

```
\partial_{\mu}(\partial_{\nu}\phi^{m})
```

was not simplified to

```
\partial_{\mu\nu}\phi^{m} ?
```

I did trial and error, for example, by writing `\partial{#}::PartialDerivative;`

, `\partial{#}::PartialDerivative:`

, `\partial{#}::PartialDerivative.`

or `\partial{#}::Derivative;`

etc...but I did not solve the problem in any way. canonicalise seemed not to work. Thank you.