Uncaught TypeError: Cannot read properties of null (reading 'dispatchEvent')

When expanding a collapsed section in the user edit page in admincp, I see the following error in the browser console log:
Code:

core-compiled.js?_v=885e7c58:7 Uncaught TypeError: Cannot read properties of null (reading 'dispatchEvent')
    at Object.trigger (core-compiled.js?_v=885e7c58:7:393)
    at HTMLSpanElement.activeTransitionComplete (structure.min.js?_v=885e7c58_mt=undefined:15:499)
    at core-compiled.js?_v=885e7c58:89:236

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