Unable to find channels with Japanese in the mobile app

I can’t find channels with Japanese in the Mattermost mobile app. But it works fine on the web and Windows desktop app.

Steps to reproduce
1 Open the mobile app
2 Tap “Find channels…”
3 Enter a Japanese channel name (e.g., 開発部, this means Development Department)

Expected behavior
開発部 channel appears in search results

Observed behavior
開発部 is not displayed in the search results, and channels not related to the search terms are displayed at the top of the results.

Env Information

  • Mattermost Version: 7.7.1 (Omnibus)
  • OS: Ubuntu 18.04.6 LTS (GNU/Linux 5.4.0-1092-aws x86_64)
  • Database: PostgreSQL 13.10 (Ubuntu 13.10-1.pgdg18.04+1)
  • Database Schema Version: 100
  • Bleve search engine: Enabled
  • Mobile App Version: 2.1.0 (Build 6000457)

I checked the following issue, and as s-ponta said, I have Bleve enabled, so I think this is not a problem.

As far as I have tried, the same situation appears to be happening with Chinese and Korean channel names. And If the channel name is in single-byte characters, I can search for it without any problem in the mobile app.

I would like to know how to resolve this issue.


Hi @ucci ,

I’ve alerted the developers about this issue, not sure how to fix that, sorry.

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Hi again,

I just got word that this issue will be fixed in the 2.2 release, see the corresponding PR here:

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Hi @agriesser,

Thanks for the good news! Looking forward to the release.

I have checked with the mobile app version 2.2, released on March 17, and it works perfectly.

Thank you!

Awesome, many thanks for confirming that the anticipated fix indeed is working for you :slight_smile:

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