[Nexus] 'Rule field' for title not read when importing a node

In Android 12 at least, I copied a node xml from my Windows install to Android's user data. After that I restart Kodi, but the rules field for title is nor read, unless I actively "Browse for value".

The xml format is correct but the rule is nor registered if I don't do it in-app.

```
<rule field="title" operator="isnot">
<value>El último duelo</value>
</value>
```

