Custom properties get undefined property warning

[rosanna-smith]

Spreadsheet has arcp://name,custom/terms# in the @context, and full property description etc in the Custom Terms tab, but in the resulting HTML preview, the property description isn't viewable anywhere, eg.

There's no way to click through or hover to see the tooltip for that term, whereas with the defined terms and defined terms sets they have their own page with all the details available.

[rosanna-smith]

It would be clearer in the preview if these properties displayed as custom:textType to match other properties as well.