**System Information**
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.92
**Blender Version**
Broken: version: 2.93.2 Release Candidate, branch: master, commit date: 2021-06-23 12:44, hash: `rB03d5c8b4edf4`
Worked: (newest version of Blender that worked as expected)
**Short description of error**
image datablocks report 1 user if they've ever been opened in the image editor but have no actual users.
**Exact steps for others to reproduce the error**
open a compositor
add an image node
load in an image
open an additional panel in the compositor view, and set it to image editor
select the image you loaded to view in the image editor
now remove it from the image editor by pressing the x, or just choose another image to view
delete the node that uses the image
check in the blend data and you'll see it still has one user.
This is problematic, because it means you cant delete image datablocks via python if they have no users, because they always report as having one if they ever appeared in the image editor.