My accents display correctly in the original md files but they do not display correctly in Obsidian. Worse, one edit within Obsidian and it overwrites my original file, stripping all characters and replacing them with the single ļæ½ character. Of course this damage is irreparable, since all different characters are replaced with the same single character making a search and replace impossible.
This french md file renders correctly in Notepad and Textpad.

In Obsidian it looks like this:

One edit in Obsidian (adding a tag, whatever) makes the original look like this:

Steps to reproduce
I donāt know if it happens with all files that include accents. This one (and some others that do not work) are encoded in ANSI Latin I, so maybe try putting that sort of file with accents in the vault.
In fact, Iām tracking another similar issue where spaces in English files are being replaced with the same character, so my guess is that it is related to ANSI Latin I files.
Environment