Introduced in a86abf5
Will be adding PR that resolves the issue shortly.

Device: Windows 10 Desktop (at least)
Browser: (New) Edge, Firefox, Chrome, latest stable versions as of 2021-08-09
Hugo Version (not relevant, but 0.85.0 through 0.87.0, at least)
PaperMod verision: 664299c

Steps to reproduce the behavior:

Enable profileMode with a configuration such as (config.toml):

[params.profileMode]
    enabled = true
    title = "A Site Title"
    subtitle = "A subtitle"
    imageUrl= "/an-image.png"
    imageTitle = "An image alt text"
    imageWidth = 512
    imageHeight = 300

In (new) Edge, use 'developer tools' and notice the warning that /an-image.png is preloaded but not used within x seconds.

So, this does add the imageURL to the home page, unfortunately it also results in imageURL being preloaded on every page.

Expected behavior:
Image should only be preloaded on home page (where it used).