Window handles (splitters/resizers between panels) are very unresponsive or difficult to grab and move. This affects all resizable interface elements (e.g., viewport/panel dividers, layer stack, properties panel).
This issue has been present across all recent versions of the application. Given the current subscription cost (€25/month), it would be reasonable to expect a more polished and production-ready user interface. This behavior feels more like that of a beta version, and it significantly impacts the user experience on macOS.