Version

2.6.8

Reproduction link

https://codesandbox.io/s/626m32y4xw?fontsize=14

Steps to reproduce

Use tagged template inside data binding:

<span>{{ t`Hello ${'Vue'}`}}</span>

What is expected?

I would expect the data binding to return the result of the tagged template function.

What is actually happening?

I am getting an error message saying that tagged templates are not supported.

Initially thought this was a feature request since it says that tagged templates are not supported. But @posva closed the original issue #9719 and asked for a repro, so here it is.