(fix) Move the offset increment and don't exceed maximum possible offset in...

(fix) Move the offset increment and don't exceed maximum possible offset in FeaturedContentService.fetch() - #2190

src/app/common/components/featured-content/featured-content.service.ts

 import { Injectable } from '@angular/core';
-import {
-  filter,
-  first,
-  map,
-  switchMap,
-  mergeMap,
-  skip,
-  take,
-} from 'rxjs/operators';
+import { filter, first, switchMap, mergeMap, skip, take } from 'rxjs/operators';
 import { FeedsService } from '../../services/feeds.service';
 
 @Injectable()
@@ -23,8 +15,8 @@ export class FeaturedContentService {
   }
 
   async fetch() {
-    if (this.offset >= this.feedsService.rawFeed.getValue().length) {
-      this.offset = -1;
+    if (this.offset++ >= this.feedsService.rawFeed.getValue().length - 1) {
+      this.offset = 0;
     }
     // Refetch every 2 calls, if not loading
     if (this.offset % 2 && !this.feedsService.inProgress.getValue()) {
@@ -36,7 +28,7 @@ export class FeaturedContentService {
         filter(feed => feed.length > 0),
         first(),
         mergeMap(feed => feed),
-        skip(this.offset++),
+        skip(this.offset),
         take(1),
         switchMap(async entity => {
           if (!entity) {