I'm new to Krita and enjoying it very much so far. I'm using v4.1.0 on a MacBook Pro.

I have a two-monitor setup. Ideally I'd like my (bigger, un-colour-calibrated) external monitor to show only the full-res canvas for painting on, and my (smaller, calibrated) internal monitor to show the tools, colour picker and a zoomed-out reference view of the canvas.

The problem is that Krita seems to treat each of its two windows as an independent instance - that is, both show the same canvas, but each has its own selection of tool, layer, colour etc. Really I want to pick a tool/layer/colour in one window and use it in the other. Is there any way of getting Krita to do that? (I would imagine that's a more likely use case than someone alternating between different tools/layers/colours on different monitors.)

I can work around this if necessary, but any light on this would be appreciated, thank you!

I have two identical monitors arranged as an extended desktop, spanning both monitors. I float many dockers and have them arranged on the left hand monitor and have few dockers on the main (right monitor) window. You can float them all to leave just the canvas on one monitor and floating dockers on the other. Floating dockers can't be stacked to form tabbed groups, which is a pity. I can save this or any arrangement as a named workspace.

You might want to give that a try to see if it suits you.

That works for me Good suggestion, thank you!