KB-XXXX Legacy forms flash in IE11 after upgrading to 19.2

Symptoms

After upgrading to Appian 19.2, mobile-enabled forms flash and cannot be interacted with in Internet Explorer 11:

In the browser console, the following error is observed:

SCRIPT5007: Unable to get property 'max' of undefined or null reference
script block (693) (9,12755)

This issue is caused by a defect in the Appian product. The defect is resolved via AN-138721 in Appian 19.2 Hotfix Package C.

Apply the latest hotfix to your Appian installation or upgrade to the latest version of Appian.

This article applies to Appian 19.2.

Last Reviewed: September 2019