AR303000 Error when moving to Activities tab of the customers, error: "undefined: cannot read properties of null (reading 'style')"

Date: 06/05/2026

Status: Awaiting fix

Reference: ADV-77957

Issue

Error on activities tab of customers screen (AR303000) "undefined: cannot read properties of null (reading 'style')" only when opening certain customers ( not all)

Workaround

Clicking off the error and out of the activities tab and then clicking back in removes error