[Bug]: Text input is lagging

[indeyets]

Before you file a bug report

• [X] I have checked the issue tracker and have not found an issue that matches the one I'm filing.
• [X] This issue is not a troubleshooting question. Troubleshooting questions go here: https://forum.mattermost.com/c/trouble-shoot/16.
• [X] This issue is not a feature request. You can request features and make product suggestions here: https://mattermost.com/suggestions/.
• [X] This issue doesn't reproduce on web browsers (such as in Chrome). If it does, issue reports go to the Mattermost Server repository.
• [X] This issue reproduces on the most recent stable version, or the most recent prerelease version of the Mattermost Desktop App.
• [X] I have read the contribution guidelines.

Mattermost Desktop Version

5.3.1

Operating System

macOS Ventura 13.4 x64

Mattermost Server Version

7.10.0

Steps to reproduce

Try to type a long message fast

Expected behavior

Letters appear instantly

Observed behavior

Letters appear with a noticeable delay.

Similar effect can be seen when webapps try to handle all of the input via heavy event handlers.

Log Output

[2023-05-16 00:15:11.314] [warn]  main window closed
[2023-05-16 08:54:03.825] [debug] DownloadsManager.init {
  'this.json': {
    'image.png': {
      addedAt: 1675363310572,
      filename: 'image.png',
      mimeType: 'image/png',
      location: '/Users/indy/Downloads/image.png',
      progress: 100,
      receivedBytes: 112440,
      state: 'completed',
      totalBytes: 112440,
      type: 'file'
    },
    '2023-03-23_150915.png': {
      addedAt: 1679578439464,
      filename: '2023-03-23_150915.png',
      mimeType: 'image/png',
      location: '/Users/indy/Downloads/2023-03-23_150915.png',
      progress: 100,
      receivedBytes: 2360962,
      state: 'completed',
      totalBytes: 2360962,
      type: 'file'
    },
    'last image.jpg': {
      addedAt: 1683111554953,
      filename: 'last image.jpg',
      mimeType: 'image/jpeg',
      location: '/Users/indy/Downloads/last image.jpg',
      progress: 100,
      receivedBytes: 118317,
      state: 'completed',
      totalBytes: 118317,
      type: 'file'
    }
  },
  validatedJSON: {
    'image.png': {
      addedAt: 1675363310572,
      filename: 'image.png',
      mimeType: 'image/png',
      location: '/Users/indy/Downloads/image.png',
      progress: 100,
      receivedBytes: 112440,
      state: 'completed',
      totalBytes: 112440,
      type: 'file'
    },
    '2023-03-23_150915.png': {
      addedAt: 1679578439464,
      filename: '2023-03-23_150915.png',
      mimeType: 'image/png',
      location: '/Users/indy/Downloads/2023-03-23_150915.png',
      progress: 100,
      receivedBytes: 2360962,
      state: 'completed',
      totalBytes: 2360962,
      type: 'file'
    },
    'last image.jpg': {
      addedAt: 1683111554953,
      filename: 'last image.jpg',
      mimeType: 'image/jpeg',
      location: '/Users/indy/Downloads/last image.jpg',
      progress: 100,
      receivedBytes: 118317,
      state: 'completed',
      totalBytes: 118317,
      type: 'file'
    }
  }
}
[2023-05-16 08:54:03.838] [debug] DownloadsManager.saveAll
[2023-05-16 08:54:03.839] [debug] DownloadsManager.checkForDeletedFiles
[2023-05-16 08:54:03.907] [warn]  Current working directory is /, changing into /Applications/Mattermost.app/Contents/MacOS
[2023-05-16 08:54:04.172] [info]  Autoupgrade disabled: false
[2023-05-16 08:54:04.314] [warn]  couldn't show lit___TAB_MESSAGING, not ready
[2023-05-16 08:54:04.315] [warn]  Failed to set new language en-GB
[2023-05-16 08:54:04.315] [warn]  Failed to set new language RU
[2023-05-16 16:20:40.286] [info]  hide back button
[2023-05-16 16:21:31.893] [info]  hide back button
[2023-05-16 16:21:36.887] [info]  lit___TAB_MESSAGING timeout expired will show the browserview
[2023-05-16 16:33:09.218] [info]  Saving config data to file...
[2023-05-16 16:33:19.944] [info]  Saving config data to file...
[2023-05-16 16:33:19.975] [error] Log level set to: error

Additional Information

Same chats in browser work perfectly fast

[devinbinnie]

@indeyets There might still be an outstanding bug, where if you hover over the textbox while typing, typing is slower. Does moving the mouse cursor help?

If not, can you reproduce the same issue on community.mattermost.com?

[indeyets]

@devinbinnie yes, I can reproduce it on community server too

and, no, I don't feel that mouse hovering does any difference

[cadavre]

I can confirm this behavior. But actually this is happening for a long time now, yet with each another version things are getting slower and slower.

macOS Ventura 13.3.1 Intel with various Mattermost servers and versions

This is definitely something about Mattermost Desktop and very often Mattermost Helper (Renderer) takes 200% CPU. Things are getting worse when I open a file (ie. PDF or PNG) sent via message.

I can confirm using the same servers with browser does work much faster.