for now

packages/svelte/tests/css/samples/dynamic-element-tag/expected.css

@@ -10,7 +10,7 @@
 	h2.svelte-xyz > span > b:where(.svelte-xyz) {
 		color: red;
 	}
-	h2.svelte-xyz span b:where(.svelte-xyz) {
+	h2.svelte-xyz span:where(.svelte-xyz) b:where(.svelte-xyz) {
 		color: red;
 	}
 	h2.svelte-xyz b:where(.svelte-xyz) {

packages/svelte/tests/css/samples/omit-scoping-attribute-whitespace-multiple/expected.css

@@ -1,3 +1,3 @@
-	div.svelte-xyz section p:where(.svelte-xyz) {
+	div.svelte-xyz section:where(.svelte-xyz) p:where(.svelte-xyz) {
 		color: red;
 	}

packages/svelte/tests/css/samples/omit-scoping-attribute-whitespace-multiple/expected.html

@@ -1 +1 @@
-<div class="svelte-xyz"><section><p class="svelte-xyz">this is styled</p></section></div>
+<div class="svelte-xyz"><section class="svelte-xyz"><p class="svelte-xyz">this is styled</p></section></div>

packages/svelte/tests/css/samples/preserve-specificity/expected.css

@@ -1,4 +1,4 @@
-  a.svelte-xyz b c span:where(.svelte-xyz) {
+  a.svelte-xyz b:where(.svelte-xyz) c:where(.svelte-xyz) span:where(.svelte-xyz) {
     color: red;
     font-size: 2em;
     font-family: 'Comic Sans MS';

packages/svelte/tests/css/samples/preserve-specificity/expected.html

@@ -1,12 +1,12 @@
 <a class="svelte-xyz">
-  <b>
-    <c>
+  <b class="svelte-xyz">
+    <c class="svelte-xyz">
       <span class="svelte-xyz">
         Big red Comic Sans
-      </span> 
+      </span>
       <span class="foo svelte-xyz">
         Big red Comic Sans
       </span>
     </c>
   </b>
-</a>
+</a>