Earlier quoted context omitted.
> The aforementioned RawTherapee has no such issues I don't mean to claim that the mentioned issues are unavoidable or that some piece of software is more likely than not to have these issues, just that when there are OS-specific issues it's this kind of thing I expect. Clipboard handling is pretty much an entirely different implementation on each platform unless you're using something like Electron that already hand…
There’s no use case for system clipboard, given it’s a monolithic piece of software that doesn’t allow multiple projects to be simultaneously open in different instances. There’s nowhere else to paste except the same window. Meanwhile, open-source, non-Electron, multi-platform software that handles copy-paste via system clipboard exists just fine (VCV Rack comes to mind).
There are many things it makes sense to copy/drag-drop between applications. There are cases where you might not need to, but using the system clipboard is still common.
> Meanwhile, open-source, non-Electron, multi-platform software that handles copy-paste via system clipboard exists just fine (VCV Rack comes to mind)
VCV Rack seems to just use GLFW to handle it, but again I'm not claiming these issues are unavoidable or more likely than not to occur. For any given issue with some software, 99% of other software will not have that same issue.