For example, the images in translated pages always show up with the image extension e.g https://example.com/de/post/cover.de.jpg. Any reason why the extension is not stripped after image processing?
Are you processing them somehow or just linking directly? As if linked directly, than it will be as expected.
I think there was an issue about this somewhere (here or on Github) that was closed (I cannot find it). I don’t remember if it was a “won’t fix” thing or why the decision was made not to strip the language extension. The image is called as .Resources.Get "cover.*" when processing which covers both cover.jpg and cover.[lang].jpg.