LaTeX.org

I have figured out a (messy) work around. I am using the subfiles package and a slightly different file structure than you:

Chapters
--Chapter_1
---Figures
----image.jpg
---chapter_1.tex
main.tex

Again the issue was that the subfile "chapter_1.tex" needs to use the path "Figures/" to find the ...

Did you ever figure out how to do this? I've run into the same problem and am curious if it is possible to include figures this way.