this is a known bug due to using a mix of non-monospaced(proportional) and monospaced fonts.
text-ident in the markdown rendering for Quotes, Tasks, Admonitions, Lists etc. is calculated based on the the character width for example: text-indent: calc(-1 * (0.8ch + 5ch));
Because different fonts have different widths for the “character” measurement, this creates these kind of visual inconsistencies, where the rendered indentation drifts or misaligns.
There are some workarounds but it’s like a Whac-A-Mole game. Fix the indent in one misbehaving element, and two more explodes somewhere completely unexpected.