Merge pull request #5922 from marmelab/fix-data-provider-stacked-quer…

…ies-resolution

Fix DataProvider Stacked Queries Resolution

packages/ra-core/src/dataProvider/useDataProvider.ts

@@ -217,7 +217,9 @@ const later = (delay = 100): Promise<void> =>
 // get a Promise that resolves once a condition is satisfied
 const waitFor = (condition: () => boolean): Promise<void> =>
     new Promise(resolve =>
-        condition() ? resolve() : later().then(() => waitFor(condition))
+        condition()
+            ? resolve()
+            : later().then(() => waitFor(condition).then(() => resolve()))
     );
 
 export default useDataProvider;