Quicken for Windows (US version only) patch release R 28.23 has, at least for me, resolved this problem.
If you haven't installed it yet, please download and install the US Mondo Patch file from https://www.quicken.com/support/update-and-mondo-patch-20182019-release-quicken-windows-subscription-product
BeSkeptical said: That apparently worked. Sad that Quicken did not update itself automatically, as it usually does.