Noticed this one too earlier this morning. Fixed it with custom CSS. Seems there were a bunch of CSS tweaks made between 0.11 and 0.12, see eg 0.12.x - metadata frontmatter triangle vertically mis-aligned
edit: here’s the CSS I’m using for now:
.markdown-preview-view h1,
.markdown-preview-view h2,
.markdown-preview-view h3,
.markdown-preview-view h4,
.markdown-preview-view h5,
.markdown-preview-view h6 {
margin: 0px 0px 8px 0px;
line-height: 100%;
}
.markdown-preview-view p {
margin-block-start: 0em;
margin-block-end: 1em;
}
.markdown-preview-view .frontmatter-container {
margin-block-end: 1em;
}