The UI's menu commands made their toasts with a fresh egui context,
whose clock starts at 0, while the app checks a toast's end against its
own clock: once the app had run a few seconds, every such toast (Auto
Advance On, presets imported or exported, the keyword painter, …) was
over before it was drawn. They use the app's context now.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>