I am using ESS 18.10 with some recent version of julia 1.7.0-DEV.894 (2021-04-09) and I encounter the following weird behavior.

```
julia> let P = 10
P
end
```

returns

```
let P = 10
C-c C-c
```

With a multiline let form, the first line is evaluated, returned then the repl hangs. Other multilines expressions do not exhibit the same behavior.

```
julia> a = 3
b = 2
a+b
```

returns

```
a = 3
3
julia> b = 2
2
julia> a+b
5
```

Is there a quick fix? Does julia 1.6 have the same problem? I switched directly from 1.1 to 1.7.