How can I add input controls inside a Modal?

[lostmsu]

With the following BodyTemplate in my Modal

<BodyTemplate>
<label>
    Use this method
    <InputCheckbox bind-Value="Use"/>
</label>
<label>
    Enable boost
    <InputCheckbox bind-Value="Boost"/>
</label>
</BodyTemplate>

When I call await modal.ShowAsync(), the render (@rendermode InteractiveServer) fails with

Unhandled exception rendering component: Cannot access a disposed object.
System.ObjectDisposedException: Cannot access a disposed object.
at Microsoft.AspNetCore.Components.RenderTree.ArrayBuilder`1.GrowBuffer(Int32 desiredCapacity)
... more RenderTree frames, and that's it

But when I comment out InputCheckboxes, the modal shows up.

I also tried moving that template into a separate component, and calling it with modal.ShowAsync<T>, but that doesn't fix the issue.

So I am at loss: what am I supposed to do to put input elements inside the Modal?

[lostmsu]

Replacing InputCheckboxes with <input type="checkbox" @bind="Use"/> seems to work for my purposes but the problem stays.