Slack for Mac 3.3.1

Slack has released version 3.3.1 of its Mac desktop client with a note that those experiencing graphical issues should turn on Disable Hardware Acceleration in Preferences > Advanced. The client app for the group messaging system and collaboration service now eliminates display of duplicate notifications when you have multiple windows open, ensures that the color profiles in version 3.2 no longer cause a flicker, improves the spellcheck logic, and improves overall stability and reliability. (Free from Slack and the Mac App Store, 66.3 MB, release notes, macOS 10.9+)