Post locked modal: the Preview link is hidden but then displayed only for small screens

[afercia]

Describe the bug

When a post is locked because it's already being edited by another user, the "post locked" modal dialog appears. On desktop, it shows only the "Exit the Editor" and "Take Over" links. Although the "Preview" link is rendered, it's hidden because of this CSS rule:

@media (min-width: 600px)
.editor-post-preview {
    display: none;
}

With a viewport width smaller than 600 pixels, the Preview link is shown:

Not sure this is the intended behavior. I'd tend to think the Preview link within this modal dialog should always be displayed. The CSS rule above appear to be intended for the Preview link in the top toolbar, which replaces the Preview menu under 600 pixels.

Also to note:

• the different styling of the Preview link
• the modal dialog is not centered on small screens

Editor version (please complete the following information):

• WordPress version: [e.g: 5.3.2] 5.5 RC 2
• Does the website has Gutenberg plugin installed, or is it using the block editor that comes by default? Default