Problem/Motivation
The jQuery Placeholder library in use requires at least jQuery version 1.6 or higher. Drupal 7 ships with version 1.4. Due to this discrepancy, the module breaks javascript functionality in IE.
Proposed resolution
Add jQuery Update as a dependency and check to make sure a version greater or equal to 1.6 is installed.
Comments
Comment #1
pixelcab commentedRan into this exact same issue. You can use the older version of jQuery placeholder instead of jQuery update.
https://github.com/mathiasbynens/jquery-placeholder/tree/v1.8.7
Comment #2
Sethie commentedAlso had the same issue. Thanks for posting Zarabadoo.
Comment #3
bleen commentedI just tried a vanilla install of Drupal7 with the v2.0.8 version of jquery.placeholder.js and had no issues.
Please reopen with exact steps to reproduce if you can show that there is a JS error with the latest version of everything