Update packages/svelte/src/internal/client/reactivity/sources.js

Co-authored-by: Rich Harris <[email protected]>

Author: trueadm

packages/svelte/src/internal/client/reactivity/sources.js

@@ -145,8 +145,8 @@ function mark_reactions(signal, status) {
 		var reaction = reactions[i];
 		var flags = reaction.f;
 
-		// Skip if they're already dirty or if they're maybe dirty and not unowned
-		if ((flags & DIRTY) !== 0 || ((flags & MAYBE_DIRTY) !== 0 && (flags & UNOWNED) === 0)) continue;
+		// If a reaction is already dirty, skip it (but always mark unowned deriveds)
+		if ((flags & (CLEAN | UNOWNED)) === 0) continue;
 
 		// In legacy mode, skip the current effect to prevent infinite loops
 		if (!runes && reaction === current_effect) continue;