Image field with multiple values: Upload new image, then delete old image breaks order

Problem/Motivation

Apologies if this has been reported before, in another form. I tried searching and didn't see any duplicates. I suspect the problem applies to multiple field types, not just images.

I've got a field with multiple images, that I need to appear in a specific order. I just got sent a series of replacement images, like so:

Image 1
Image 2
Image 3
Image 4
Image 5

to be replaced with

Image 1
Image 2a
Image 3
Image 4a
Image 5

If I first upload the images and move them into correct position, like so:

Image 1
Image 2
Image 2a
Image 3
Image 4
Image 4a
Image 5

And then click the Remove button to delete Image 2 and 4, the order I had just set up is lost and I'm left with:

Image 1
Image 3
Image 5
Image 2a
Image 4a

I obviously could just delete image 2 and 4 first, then upload. Or move the images into place after I deleted them. Or save the node before deleting them. I was kind of using the old images as a guide to know where the new ones were supposed to be placed.

Very minor, to be sure, but thought I'd report it. From a UI perspective it's a bit jarring.

Steps to reproduce

Proposed resolution

TBA

Remaining tasks

Search for duplicate issue
Write a test

User interface changes

API changes

Data model changes

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