iOS App Does Not Reflect Tagged State

[mattallford]

Q	A
Device?	iPhone/iPad
Device Os version	13.3.1
App Version	5.0.0 build 249
Wallabag server version	2.3.8

Steps to reproduce/test case

When reading an article on iOS, if I apply a tag to the article and send it, the tag does apply and is reflected in the web browser version of wallabag, but when re-visiting the article on the iOS device, I cannot see the tags that have been applied.

1. Open the wallabag app on an iOS device and open an article
2. Tap the tag icon
3. Tick to select previously used tags or add a new tag and tap send

The tag does appear on the web browser version of wallabag, as seen below I tagged the article indicated in the red square with the "ansible" tag:

Yet when I revisit the same article on the iOS device, there is no indication that the article is tagged:

Improvement

Tags should remain consistent when viewing an article from any device. The tags should be able to be modified on any client.

Somewhat related to #71 it would be great to be able to sort and search articles from the iOS device by tags, similar to what can be done in the web browser.