Describe the bug

I can't describe the bug any more detailed that the title, but I've reduced it to a very small REPL. See repro

Reproduction

Here is the REPL, running the latest version (as of writing this) https://svelte.dev/playground/b878ade565124e529aa8c3e73275f564?version=5.35.2

It looks like it was introduced from 5.19.5 and onwards:

REPL for 5.19.4 works
REPL for 5.19.5 doesn't work

Seems to originate from: #15137

Annoyingly, the issue disappears if you try to $inspect the misbehaving variable.

Logs

System Info

System:
    OS: Linux 6.6 Ubuntu 24.04.1 LTS 24.04.1 LTS (Noble Numbat)
    CPU: (16) x64 AMD Ryzen 9 6900HS with Radeon Graphics
    Memory: 10.53 GB / 15.25 GB
    Container: Yes
    Shell: 5.2.21 - /bin/bash
  Binaries:
    Node: 22.13.1 - ~/.local/share/node/bin/node
    npm: 10.9.2 - ~/.local/share/node/bin/npm
    pnpm: 9.15.4 - ~/.local/share/node/bin/pnpm

Severity

annoyance