2777883 - 1902 - Rule Context - Add new (+) Icon has no Function

• When trying to use the rule context button in Manage Business Configuration >  (select a field) > trigger rule (new Q1 2019 feature), I see a javascript error.
• Anyway, I would like to validate if it is really meaningful to add more than 1 context to a rule. Is this really the expected behaviour or is this button a bug?
• After the Q1 2019 Production Release Deployment, the rule context is not allowing us to add more than one entry; a javascript error is poping up.

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.“

•  Employee Central - Business Configuration
•  Employee Central - Business Rules

1902 , rule context, ECT-110110, ECT-101897, ECT-102760, ECT-69201, Manage Business Configuration, BCUI, Rule context feature in BCUI, Configuring Context for Business Rules, Add button, Delete Button, Trash Icon, + Icon, Plus Icon, Add new , KBA , LOD-SF-EC-BCI , Manage Business Configuration (BCUI) & Data Models (XML) , LOD-SF-EC-RUL , DO NOT USE - Business Rules & Event Derivation , How To