Automatic time zone is not updated without refreshing page

[mattermod]

Summary

When your time zone changes, the messages in channel still show as the old time, not the new time. You have to reload or force close / open to get the correct time to show. This happens when you have the timezone set to automatic in your user settings in Mattermost (User Settings > Display > Timezone).

To fix this, we should check if the timezone has changed more often. If there’s no browser event for this change, we can likely check this when MM becomes visible

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JIRA: https://mattermost.atlassian.net/browse/MM-58025

[fasal26]

Hey @mattermod I would like to take this