https://bugs.kde.org/show_bug.cgi?id=438537
--- Comment #1 from Zesko <xichen.b...@gmail.com> --- I checked this issue and know now: There are two different copy technologies: - Copy - Copy buffer Mattermost in Chromium works with both, that is why two of the same pictures appeared in Mattermost in Chromium. Mattermost in Firefox works with "Copy buffer" only, then one picture appereared in Mattermost in Firefox. -- You are receiving this mail because: You are watching all bug changes.