Hello Graeme. I'm not getting satisfactory results with UIDesigner and the latest version of fpGUI (v2.0.1) on Linux (see the video): https://github.com/user-attachments/assets/98b35254-eba0-4d03-9316-546f68b0aa10 (And the .prj file is outdated, but that's a separate issue I can resolve if you'd like.)