Changed $state randomly doesn't update the UI#15833

### Describe the bug I have a piece of html below ("totalWin" is a piece of $state on the "bet"-object) and most of the time the value updates as expected: ``` <div class="flex flex-col justify-center items-center"> <div> Test </div> <div class={`text-xl font-normal`} > {currency.formatCurrency(bet.totalWin)} </div> </div> ``` But sometimes (randomly?) it doesn't reflect the new value of "totalWin" state (on iOS Safari). I debugged this and removed more and more code until I found what caused it. If I instead change to the code to below it works always (the only changed thing is that I removed the "Test" text from the sibling html node): ``` <div class="flex flex-col justify-center items-center"> <div> </div> <div class={`text-xl font-normal`} > {currency.formatCurrency(bet.totalWin)} </div> </div> ``` How and why, you have any idea? ### Reproduction Sorry, this is a pretty big project. ### Logs ```shell ``` ### System Info ```shell System: OS: macOS 15.4.1 CPU: (11) arm64 Apple M3 Pro Memory: 316.48 MB / 18.00 GB Shell: 5.9 - /bin/zsh Binaries: Node: 22.12.0 - ~/.nvm/versions/node/v22.12.0/bin/node npm: 10.9.0 - ~/.nvm/versions/node/v22.12.0/bin/npm bun: 1.0.29 - ~/.bun/bin/bun Browsers: Chrome: 135.0.7049.115 Safari: 18.4 npmPackages: svelte: ^5.0.0 => 5.28.2 ``` ### Severity blocking an upgrade