FlowGraph supports Geometry Nodes in Blender 4.2–5.2. The same 0.1.0 candidate ZIP passed isolated installation, reinstallation and automated native Add-menu checks on Windows builds 4.2.23, 4.3.2, 4.4.3, 4.5.4, 5.0.1, 5.1.2 and 5.2.2. This does not claim that every patch release or operating system was tested. macOS and Linux are unverified. FlowGraph remains pre-release.

No. FlowGraph saves its own node positions independently. Moving a node in FlowGraph does not change that node's position in the classic editor. Node, link and parameter edits still affect the same actual Geometry Nodes tree, so this is an alternative editor, not a separate copy of your graph.