report bug : data still there despite remove and destroy calls

src/rx-database.ts

@@ -586,7 +586,7 @@ export async function _removeAllOfCollection(
     const docs = await getAllCollectionDocuments(rxDatabase.internalStore, rxDatabase.storage);
     const relevantDocs = docs
         .filter((doc) => {
-            const name = doc.key.split('-')[0];
+            const name = doc.key.split('-')[0]; // hello split ! ^^
             return name === collectionName;
         });
     const writeRows = relevantDocs.map(doc => {

test/unit/rx-database.test.ts

@@ -35,6 +35,7 @@ import * as schemaObjects from '../helper/schema-objects';
 
 import { RxDBEncryptionPlugin } from '../../plugins/encryption';
 import { InternalStorePasswordDocType } from '../../src/plugins/encryption';
+
 addRxPlugin(RxDBEncryptionPlugin);
 
 config.parallel('rx-database.test.js', () => {
@@ -661,8 +662,48 @@ config.parallel('rx-database.test.js', () => {
             );
             assert.strictEqual(pouchPath, 'subfolder/mydb-rxdb-5-humans');
         });
-    });
 
+
+        it('#3788 removing the collection should also remove all changes', async () => {
+            if (!config.storage.hasMultiInstance) {
+                return;
+            }
+
+            const dbName = randomCouchString();
+
+            const createDb = async () => {
+                const db = await createRxDatabase({
+                    name: dbName,
+                    storage: config.storage.getStorage(),
+                    ignoreDuplicate: true
+                });
+                await db.addCollections({
+                    'human-2': { schema: schemas.human }
+                });
+                return db;
+            }
+
+            const db1 = await createDb();
+            await db1.collections['human-2'].insert(schemaObjects.simpleHuman());
+            const db2 = await createDb();
+
+            // remove the collection on one database
+            await db1['human-2'].remove();
+
+
+            /**
+             * Getting the changes in the other database should have an empty result.
+             */
+            const changesResult = await db2['human-2'].storageInstance.getChangedDocumentsSince(10);
+
+            console.dir(changesResult);
+
+            assert.strictEqual(changesResult.length, 0);
+
+            db1.destroy();
+            db2.destroy();
+        });
+    });
     describe('wait a bit', () => {
         it('w8 a bit', (done) => {
             setTimeout(done, 30);