Clicking the eye for previewing the site does not work in IEx. It bring up the errors. One of related to mine (no big deal) but it seems to be the main issue to Percussion’s script (PercViewport.js). Here’s the screenshot. 
Clicking the eye for previewing the site does not work in IEx. It bring up the errors. One of related to mine (no big deal) but it seems to be the main issue to Percussion’s script (PercViewport.js). Here’s the screenshot.