Some messages are not displayed in the mobile application

[Maksprots]

Summary

We find some messages that are not always displayed in the mobile version.
If you send the same message several times, some will be visible in full, and some will be visible as an empty message, similar to this issue #8435.
We send messages as a post from a python application.
Fyi we use mattermostdriver==7.3.2.
We did not find any patterns in messages that are not displayed; moreover, sometimes they are displayed, but here is an example of one such message.

{
  "from_bot": "true",
  "attachments": [
    {
      "id": 0,
      "ts": null,
      "text": "Latency is high  - 1.133  udwh.sas.master_flow.daily",
      "color": "#FFA059",
      "title": "❗ Prometheus - ServiceHighLatency",
      "fields": null,
      "footer": "",
      "pretext": "",
      "fallback": "Prometheus -ServiceHighLatency",
      "image_url": "",
      "thumb_url": "",
      "title_link": "https://examle.com/text/601aac0a-03da-4713-ac4f-b13437a71f8f",
      "author_icon": "",
      "author_link": "",
      "author_name": "",
      "footer_icon": ""
    }
  ]
}

Let me clarify: I sent the post several times, but you can only read some of the posts, the rest look empty.

Environment Information

• Device Name: any
• OS Version: android and ios
• Mattermost App Version: 2.23.1
• Mattermost Server Version: 9.11.0

Steps to reproduce

It is necessary to send similar messages through the python method posts.create_post, several times, if it does not help, you should add words separated by a dot, for example word.word.word, in different fields of the post.

Expected behavior

In the mobile app, the message will appear blank. But when you resend or actively maintain a thread, it may become visiblе.

[amyblais]

Opened https://mattermost.atlassian.net/browse/MM-62509.