I found a problem and checked the GitHub issues to see whether it had already been reported. It had: “HyperTreeList: resizing columns creates an odd graphical bug, producing a black vertical bar #1031”. But the OP had closed it with the comment “Must have been an issue in my environment, problem seems to have corrected itself.”
Presumably issues aren’t reopened and I should open a new issue, noting that this is similar to #1031? Should I include any comment in #1031 to point anyone who may refer to it later to the newer issue?