Making a wikitext field mandatory via UI Policy causes the javascript error "Cannot read property 'removeClassName' of undefined"DescriptionWhen trying to make a wikitext field mandatory via a UI Policy, the javascript error "Cannot read property 'removeClassName' of undefined" is generated. Steps to Reproduce 1 - Go to kb_knowledge.list2 - Choose any knowledge article3 - Right click choose configure > all4 - Disable all the UI Policies5 - Create a new UI Policy6 - Create a new UI Policy Action that makes the wiki field mandatory7 - Save8 - Go to any knowledge articleNotice the javascript error in the browser console:Cannot read property 'removeClassName' of undefinedkb_knowledge.do:90 +-- Parse timesWorkaroundAfter carefully considering the severity and frequency of the issue, and the cost and risk of attempting a fix, it has been decided to not address this issue in any current or near future releases. We do not make this decision lightly, and we apologise for any inconvenience. As a workaround, use a Client Script instead of a UI Policy.Related Problem: PRB629137