Tooltip Not Displaying on RadzenColumnSeries (Even with Code from Official Docs)

[Harsh_Butani]

I’m facing an issue after update Radzen with latest version "7.0.5" where the tooltip does not display when hovering over a RadzenColumnSeries .

To make sure everything was correct, I even picked up the exact example from the official documentation under the "Tooltip " section. Still, the tooltip is not showing in my case.

Here’s my full code:

Razor Markup:

<RadzenChart class="h-100" Visible="ShowChart">
    <RadzenColumnSeries Data="@revenue" CategoryProperty="Quarter" ValueProperty="Revenue">
        <TooltipTemplate Context="data">
            <div>
                Revenue for <span>@data.Quarter</span> 2022:
                <strong>@data.Revenue</strong>
            </div>
        </TooltipTemplate>
    </RadzenColumnSeries>
    <RadzenColumnOptions Margin="1" Radius="0" />
</RadzenChart>

Code Behind:

class DataItem
{
    public string Quarter { get; set; }
    public double Revenue { get; set; }
}

DataItem[] revenue = new DataItem[]
{
    new DataItem { Quarter = "Q1", Revenue = 234000 },
    new DataItem { Quarter = "Q2", Revenue = 284000 },
    new DataItem { Quarter = "Q3", Revenue = 274000 },
    new DataItem { Quarter = "Q4", Revenue = 294000 }
};

Problem:

• No tooltip is shown when I hover over any column.
• The RadzenColumnSeries also doesn't display any title by default (not sure if it's related).
• I confirmed that ShowChart is true and the chart renders visually—just no hover feedback.

Attached:

I’ve attached an image showing the issue clearly (hover state with no tooltip).

[korchev]

Does the online demo work for you? If yes then you probably have an old theme CSS cached.

[Harsh_Butani]

I am using Private Tab in Browser, it will not store any CSS in cache.
But issue has been solved from this : Tooltips don't show on Charts - #3 by PaulSinnema.

Thanks!