Text substitution does not work with Slack on Yosemite I have a text substitution setup within the System Preferences. This works most places within OS X as far as I can tell, but it does not work in Slack. (Their native app for OS X version 1.1.4 - 2814)

Does anyone know why?



UPDATE
It looks like this is not specific to Slack at all
Even after following the instructions in the accepted answer, this still did not work for me until I followed these instructions. Basically, run the following in a terminal:

defaults write -g WebAutomaticTextReplacementEnabled -bool true

or to only change Slack's behavior (and not pollute your global domain):

defaults write com.tinyspeck.slackmacgap WebAutomaticTextReplacementEnabled -bool true