稍微修了一下，希望下个版本不要再乱改了 
.markdown-source-view.mod-cm6 .cm-indent {
min-width: 0; /*仅等宽字体，0或2em*/
}
.markdown-source-view.mod-cm6.is-live-preview .cm-indent::before {
margin-inline-start: 0 ;
}
.cm-formatting-list-ul, .cm-formatting-list-ol {
padding-inline-start: 0 ;
}
.markdown-source-view.mod-cm6 .task-list-label {
padding: 0;
margin-inline-start: -1em;
}
.markdown-source-view.mod-cm6 .cm-fold-indicator .collapse-indicator {
top: 1px;
inset-inline-end: 0.5em;
padding-inline-end: 0em;
}
.markdown-source-view.mod-cm6.is-live-preview .cm-line.HyperMD-list-line:not(.cm-active):not(.HyperMD-task-line) .cm-fold-indicator .collapse-indicator {
padding-inline-end: 0.5em;
inset-inline-end: 0em;
}