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.