Hi Amy.
I use the Windows Desktop Client with Mattermost Enterprise Edition v4.9.
This is a screenshot of viewing a screenshot in Mattermost.
It seems that the image always has a maximum of 50% of the height/width of the app window. It would be nice if I could click on the image and it opens as big as possible, in this case as big as the screen or at least as big as the app window.
The settings in the link seemed to allow this, but apparently they were removed in the current versions.
Regards
Thomas