Images in comments on gitlab.com inserted using HTML src tag will expire

Summary

I noticed in this comment that one of the inline markdown images expired and returns a 404, while the other one did not expire:

It turns out the reason is because the first image was inserted using custom HTML that I wrote manually, in order to control the width and height:

<img src="/uploads/aa5d4cde139caf754f97471ab79decdf/image.png" width="80%" height="80%" />

while the second image was inserted by simply dragging and dropping the image into the comment, and using the generated markdown as-is:

![image](/uploads/eb878a6a216ff6015c8f5e572df2423d/image.png)

Steps to reproduce

1. Drag and drop an image to a comment or issue description

2. A markdown image link will be inserted, for example:

   ![image](/uploads/eb878a6a216ff6015c8f5e572df2423d/image.png)

3. Take the path to the image and convert it into an HTML src tag, for example:

   <img src="/uploads/eb878a6a216ff6015c8f5e572df2423d/image.png" width="80%" height="80%" />

4. The image in the HTML src tag will eventually expire (I'm not sure on how long it takes before expiration).

Example Project

See this comment or this comment

What is the current bug behavior?

Images inserted using <img src="/path/to/image.png" /> expire.

What is the expected correct behavior?

Images inserted using <img src="/path/to/image.png" /> do not expire.

Possible fixes