Text Duplication on contenteditable on svelte:element

[reinhard-sanz]

Describe the bug

I am getting this weird text duplication on contenteditable on svelte:elements. It's a bit hard to explain but i managed to build a reproduction, which should explain the error.

I initially though this was fixed in: #17853
But the issue still persists in 5.54.0

Reproduction

The reproduction has a svelte:element and a button to enable editing on the svelte element.
(IIRC contenteditable cannot be dynamic, therefore the if is needed, if this has been made possible in an update please let me know)
As long as there is some text content present the bug does not occur and one can edit the text as he pleases.

To reproduce the bug you have to do the following steps:

1. Enable Edit using the button
2. Remove all text from the svelte:element (if not all text is removed the bug will not occur)
3. Disable Edit
4. Reenable Edit
5. Start typing something
6. See that text follows correctly in the inspect but visually the text is duplicated

https://svelte.dev/playground/61c8e36e179a4a5aad34d3736e919ee9?version=latest

Logs

System Info

Svelte version: 5.54.0

Severity

annoyance

[7nik]

The issue happens in Chrome but not in Firefox 🤔
#17853 was about @html, here a regular text.