What would you prefer it do? That "new layer" is how it asks whether you meant to paste the contents of your clipboard into an actual new layer or merge it into an existing one (anchor).
I'd prefer it to paste into the current layer. If I want to paste into a new layer, I can create a layer before pasting.
Barring that, I'd also prefer it to surface anything to tell the user what's going on. Pasting subtly switches modes into a context where a lot of the UI isn't working right until you make a decision on what to do with the floating layer. That kind of mode-switch should be signalled loudly to a user. The signal Gimp chose? Two small buttons in the layer panel highlight green.
> Copying and pasting now creates a new layer by default rather than a “floating selection”, which many users found confusing. Floating layers can still be created with the “Paste as Floating Data” option for those who prefer that workflow.
You're right. I looked again and... it wasn't there. Turned out to be a real doozy:
You know how pasting creates this special "floating" layer? While in this mode, the "Layer->Merge Down" menu command is replaced by "Layer->Anchor Layer" - which has the keybind. "New Layer" also becomes "To New Layer".
While I can see how it makes sense on some level, it's also a whole new kind of counterintuitive.
Yeah, that's mostly my issue with it. IIUC it's no longer the default behavior in version 3, so good choice on the team's part.
The problem with it is that we've had a good UX understanding of how modal behavior works for ages, and if you're going to do something modal, you need to make clear to the user that the mode has changed (especially to the naive user, who has no reason to anticipate paste enters a novel mode). The indicators that mode has shifted are too subtle: one is the buttons going green on the layer panel (which I think can be hidden at that point? I'd have to check), and the other, I have now learned, is some menu options changed. No dialog box, color switch, or text indicator to say "PASTE MODE: choose how this pasted data should be added to the image."
And when it's so high on the critical path of using the software (how long does the average user use an image editor before they try to paste something?), it's a huge hit to the overall experience and makes the user feel like this tool is too complicated.