[Svelte 5] Spread attributes not reactive when used with a function

[adiguba]

Describe the bug

With Svelte 5, function calls in the template are reactive.

Basically these examples are reactive (if aFunctionCall() use a state) :

<div>{aFunctionCall()}</div>

or

<div class={aFunctionCall()}> ... </div>

But this is not the case for the spread attributes :

<div {...aFunctionCall()}> ... </div>

Reproduction

See REPL

Choose a color. The class attribute is not updated on the last div

Seem that the $.spread_attributes() call should be inside a $.render_effect()

Logs

No response

System Info

REPL

Severity

annoyance