Ok I'm seeing this issue again in a different workspace with multiple subprojects. I definitely didn't bump the Initialize button on this project. It's creating a frontmatter.json file. Nothing related in ./.vscode/settings.json for either workspace or workspace projects.
I just found that keying Ctrl-S to save a file I've just edited pops up this from FrontMatter asking me to select a workspace project instead of saving the file. So that might explain what's happening.

Originally posted by @tohagan in #774 (comment)
Ok I'm seeing this issue again in a different workspace with multiple subprojects. I definitely didn't bump the Initialize button on this project. It's creating a
frontmatter.jsonfile. Nothing related in./.vscode/settings.jsonfor either workspace or workspace projects.I just found that keying
Ctrl-Sto save a file I've just edited pops up this from FrontMatter asking me to select a workspace project instead of saving the file. So that might explain what's happening.Originally posted by @tohagan in #774 (comment)