fix: edge case where the length of enabledLayers doesn't match with t…

…he number of encodings

packages/client/src/rtc/Publisher.ts

@@ -390,12 +390,14 @@ export class Publisher {
 
     let changed = false;
     for (const encoder of params.encodings) {
-      const layer =
-        usesSvcCodec || enabledLayers.length === 1
-          ? // for SVC, we only have one layer (q) and often rid is omitted
-            enabledLayers[0]
-          : // for non-SVC, we need to find the layer by rid (simulcast)
-            enabledLayers.find((l) => l.name === encoder.rid);
+      const layer = usesSvcCodec
+        ? // for SVC, we only have one layer (q) and often rid is omitted
+          enabledLayers[0]
+        : // for non-SVC, we need to find the layer by rid (simulcast)
+          enabledLayers.find((l) => l.name === encoder.rid) ??
+            (enabledLayers.length === 1 && params.encodings.length === 1)
+          ? enabledLayers[0]
+          : undefined;
 
       // flip 'active' flag only when necessary
       const shouldActivate = !!layer?.active;