Is this just some glitch somewhere? Or are the properties actually missing?
The UI features for highlighting things are far more limited than when using the VCL or FMX because a lot of stuff is suppressed or overridden by HTML / CSS tags and it's very opaque in terms of how to do some things simply. I keep finding UI display features that don't work at run-time even though they do often work in isolation. I'm just wanting to get my logic and flow down right now and deal with the "look and feel" later, but it has been quite challenging just to make certain things show up on the screen at run-time.
I'm guessing that some of the issues are because certain FNC components require Bootstrap to be loaded, and that's something that impacts EVERYTHING on the form in often subtle ways.
I absolutely LOVE what WEB Core offers, but I'm spending a lot more time than I like on minute UI display features that are not very important just to avoid an overly complex UI layout.
All of that aside, it's really exciting to see an idea that's been stuck in my head for years finally coming to life!