Same applies to other native GUI tools, like WPF/WinUI(UWP), Qt, Cocoa,...
The Rust semantics also seem to make it quite complex to just drag components around on a GUI designer, because the lifetimes become dynamic and just dropping a component in the middle of a form can have multiple lifetime meanings, depending on the surrounding context.
GammaRay is like Dev Tools but extremely unstable, and requiring fiddling with ptrace permissions on Linux, and I don't know how to make it work on Windows.
The Rust semantics also seem to make it quite complex to just drag components around on a GUI designer, because the lifetimes become dynamic and just dropping a component in the middle of a form can have multiple lifetime meanings, depending on the surrounding context.