v4.0.0: Uncaught (in promise) Error: Cannot call hasPendingEvent with pendingEventOrdering == chronological

Due to this issue https://github.com/matrix-org/matrix-js-sdk/issues/1216 I am not able to update the SDK since v4.0.0. So this issue occurs in v4.0.0, maybe also in later versions (> v4.0.0).

The following exception is thrown

Uncaught (in promise) Error: Cannot call hasPendingEvent with pendingEventOrdering == chronological

while sending a read receipt (MatrixClient.prototype.sendReadReceipt) with opts.hidden = false.

Stack trace:

browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14 Uncaught (in promise) Error: Cannot call hasPendingEvent with pendingEventOrdering == chronological
    at _.hasPendingEvent (browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14)
    at M.<anonymous> (browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14)
    at c (browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14)
    at Generator._invoke (browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14)
    at Generator.forEach.e.<computed> [as next] (browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14)
    at c (browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14)
    at t (browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14)
    at browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14
    at new Promise (<anonymous>)
    at o (browser-matrix.min.js?v=ff0f3dfc38cda0ac9b88e0bc87ae8e67:14)

Start with MatrixClient.prototype.sendReadReceipt and trace the hasPendingEvent call that raises the reported error when opts.hidden is false; the stack trace is from browser-matrix.min.js. Reproduce the read-receipt flow and determine what behavior is expected with chronological pending-event ordering; done means the call completes without this exception.