For the last couple of weeks, I've been dealing with the fallout of upgrading a web application to Svelte 5. Complaints about framework churn and migration annoyances aside, I've run into some interesting issues with the migration. So far, I haven't seen many other people register the same issues, so I thought it might be constructive for me to articulate them myself. I'll try not to complain too much in this post, since I'm grateful for the many years of Svelte 3/4 I've enjoyed. But I don't thi...