Sample Loading Bugfix report issues when found

synth/synth.ts

@@ -4052,7 +4052,7 @@ export class Song {
                         else {
                             // UB version 2 URLs and below will be using the old syntax, so we do need to parse it in that case.
                             // UB version 3 URLs should only have the new syntax, though, unless the user has edited the URL manually.
-                            const parseOldSyntax: boolean = beforeThree;
+                            const parseOldSyntax: boolean = (fromUltraBox && beforeThree);
                             const ok: boolean = Song._parseAndConfigureCustomSample(url, customSampleUrls, customSamplePresets, sampleLoadingState, parseOldSyntax);
                             if (!ok) {
                                 continue;