[Bug] Background content scrollable when modal is open

[3hxx]

Describe the bug
When the modal is open i can still scroll down on the background content? I've tried googling it and I can't see this has been raised before?

To Reproduce
Steps to reproduce the behavior:
`var options = new ModalOptions()
{
Class = "blazored-modal-photo-select",
};

    var parameters = new ModalParameters();
    var modal = ModalService.Show<AddOrRemovePhotosModal>("Edit Photos", parameters, options);`

Expected behavior
I would expect the background not to be scrollable when a modal is open

Screenshots
https://gyazo.com/d3086c9dadcb0153a8bf6d5a95d9ed55

Here is a gif of my behavior

Hosting Model (is this issue happening with a certain hosting model?):

• Blazor Server

[chrissainty]

Are you seeing this in the latest preview package or the current GA version?

[3hxx]

Version I am using is 7.0.0-preview.2 :)

[chrissainty]

This only appears to happen on mobile devices, specifically Safari on iOS. I've noticed that Bootstraps modal also has this behaviour on iOS as well.

[LePtitJoNadeau]

@chrissainty,
On Firefox browser, (not on phone)
I can reproduce a similar bug on Firefox as well.

This is my setup:

Firefox version: 110.0.1 (64-bit)

My body where the modal is open from:


When modal open, I can still scroll from body.

This only occur in Firefox.

I tried on:
Edge
Chrome

No problem with these.

Thank you very much :)

[MarkusG]

Also running into this issue on version 7.1.0 on Firefox and Chromium.