Desktop: Not possible to open URLs in MM linux client

[systems-levigo]

I confirm (by marking "x" in the [ ] below: [x]):

• [ x] This is not a troubleshooting question. Troubleshooting questions go here: http://www.mattermost.org/troubleshoot/.
• [ x] This doesn't reproduce on web browsers (such as in Chrome). If it does, issue reports go to the Mattermost Server repository.
• [ x] I have read contributing guidelines.

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Summary
It is not possible to open URLs in mm linux client.

Environment

• Operating System: Linux Mint
• Mattermost Desktop App version: 4.3.0
• Mattermost Server version: 5.17.0

Steps to reproduce
Install the mm client on a linux client and try to click on a URL

Expected behavior
URL opens in webbrowser

Observed behavior
Nothing happens

[Willyfrog]

Hi there! Can you test on 4.3.2 as it should be fixed there?

[systems-levigo]

No change but i saw something while launching mm via shell.
Untrusted popup window blocked

Where i can change this behavior?

[svelle]

Weird, I use Fedora as a daily driver and have no issues. Maybe it's something Mint specific?

We should test this and see if it's different when using Mint. @levigo-systems what Mint version are you running?

[systems-levigo]

I am using LMDE 3 (cindy) based on Debian Stretch.

[svelle]

I am using LMDE 3 (cindy) based on Debian Stretch.

Great I'll see if I can repro this next week as I'm out for the weekend now. But if anybody else comes first they're more than welcome to do so.

[systems-levigo]

Hey @svelle did you repro the problem?

[navalnichnik]

I confirm I face the same issue on Debian 10 with Gnome 3.30.2
I moved from Fedora 30 with the same Gnome and MM has been working correctly there.

Clicking on any link in MM generates the following records in the syslog:

- Dec 21 21:44:20 siarzhuk-pc mattermost-desktop.desktop[2418]: [21:44:20.235] [info] Untrusted popup window blocked: https://blablabla.com

- Dec 21 21:44:20 siarzhuk-pc mattermost-desktop.desktop[2418]: The setuid sandbox is not running as root. Common causes:

- Dec 21 21:44:20 siarzhuk-pc mattermost-desktop.desktop[2418]:   * An unprivileged process using ptrace on it, like a debugger.

- Dec 21 21:44:20 siarzhuk-pc mattermost-desktop.desktop[2418]:   * A parent process set prctl(PR_SET_NO_NEW_PRIVS, ...)

- Dec 21 21:44:20 siarzhuk-pc mattermost-desktop.desktop[2418]: Failed to move to new namespace: PID namespaces supported, Network namespace supported, but failed: errno = Operation not permitted

- Dec 21 21:44:20 siarzhuk-pc kernel: [  911.467450] traps: chrome[25671] trap int3 ip:56444e11dff7 sp:7ffc24e03900 error:0 in chrome[564449f62000+7170000]

[cielavenir]

dupe of #1101, which can be fixed permanently using https://github.com/mattermost/desktop/issues/1101#issuecomment-560137871.