Can't change the font of a heading style

[ClareMil]

I am using new RoboHelp 2019 and all of my patches are up to date. I have a style called h1 for heading 1, and I can't change its font. When I click the drop-down list box arrow next to the field something flashes up but then nothing happens. Surely this is a fairly standard/common thing to want to do?

Here is a picture:

I have looked in the forums and help but can't find an answer. Is this a bug?

[Peter Grainge · Accepted solution]

It's not a known bug. First thing to do is try another project. Open the RoboHelp Reimagined sample project and try there. That's a known quantity. Post back what happens there.

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[ClareMil]

Thanks Peter, I selected it there and now I can select it in my project. 

[Peter Grainge]

Not an expected result but anything that works!

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www.grainge.org