I’ve done a deeper dive on this and found a workaround: in a CSS snippet, manually set the text-indent and padding-left for .HyperMD-list-line-1, .HyperMD-list-line-2, .HyperMD-list-line-3, .HyperMD-list-line-4, .HyperMD-list-line-5, .HyperMD-list-line-6 and potentially further on depending on how nested your notes are, using !important to ensure this is applied. This forced the indentation not to shift as I’ve previously described (I matched the px of my custom CSS to the ordinary indentation before the glitch showed up).