"Allow image URLs" not working as expected

[murtaugh]

I have a textarea field with simple HTML in it. The channel is set to Allow all HTML, and "Allow image URLs" is off.

When I output the content to a template, EE is stripping out img tags, leaving just the URL for the src attribute.

(What I expect to happen: The img tag to remain in place when rendering the template.)

If I turn on "Allow image URLs" the existing img tag is left alone and an image loads in the rendered template.

(This is expected.)

If I turn on "Allow image URLs", and take out the img tag, leaving a bare URL to an image in the field, the URL is simply rendered as text in the template.

(What I expect to happen: The description of the "Allow image URLs" setting says that "URLs to image resources will be automagically rendered as images," so I expect the template to wrap the bare URL in an img tag.)

EE 6.2.4

[intoeetive]

@robinsowell @TomJaeger can you review this one? I intent to leave it as it is, even if it's not 100% consistent, as it has been like that for years and people might be relying on that behaviour