You do exactly what the sentence you quoted says.

Remove Color appears if the tag has a color to begin with.

If you think something isn't working, we'd need to see the whole process you're following, including the original tag, along with a Report ID.

OK, that makes sense. I suppose that my tag doesn't have a colour, then.

Why did I think it does? Because it is shown as part of the title (in the title column) and my understanding is that for tags to be shown there, they have to have a colour. Is there any other way how tags can show up in the title column?

OK, that explains things. Thank you.

Maybe that information could be added to https://www.zotero.org/support/collections_and_tags?

@poettli, thanks for sharing that link. Yes, adding the information to that section would be a good place to add the info. Maybe something like "Emoji tags appear next items' titles in the center pane."

If that's what it's supposed to say, I didn't catch that. It just says that they are shown in the item list, not that they are displayed within the title column.

For coloured tags, the text is clear: "Colored tags appear as small colored squares next to items' titles in the center pane."

If emoji tags are treated exactly the same, why not describe it exactly the same way?