How to prevent showing two dialogs?

[sharpninja]

I'm sure the problem here is PEBKAC, so I'm asking a question first.

Here you can see that I'm somehow getting two dialogs opened. The one with content has this Blazor component:

@using System.Text;
@using Blazored.Modal
@using Blazored.Modal.Services
@using Microsoft.AspNetCore.Components.Forms

<div class="modal fade show d-block" tabindex="-1" role="dialog">
    <div class="modal-backdrop fade show" @onclick="Cancel"></div>
    <div class="modal-dialog" style="z-index: 1050">
        <!-- Pop it above the backdrop -->
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Upload Open API / Swagger File</h5>
                <button type="button" class="close" aria-label="Close" @onclick="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <div class="modal-body">
                <p>
                    <InputFile OnChange="@OnInputFileChange" />
                </p>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" @onclick="Close">Close</button>
            </div>
        </div>
    </div>
</div>

It is being displayed by this click handler:

    private async Task OnClickAsync(MouseEventArgs arg)
    {
        var dialog = Modal.Show<UploadDialog>(
            "", 
            new ModalOptions{
                HideHeader = true,
                Position = ModalPosition.Center,
                ContentScrollable = false
            });

        var result = await dialog.Result;

        _swagger = result.Data as string;

        await _editor.SetValue(_swagger);
    }

What do I need to do differently?

[larsk2009]

Could you provide the HTML for the button that triggers OnClickAsync? If possible you can always provide the whole project or a small project which shows this issue. That way it is much easier to solve your issue.

EDIT: Forget to mention it, but maybe the Modal is also being opened by Bootstrap (since it seems like a bootstrap modal). Regardless, best way to help you is to share a project.