Do we still have this issue?
I couldn’t reproduce this defect using Obsidian 0.6.7 on Linux (no custom CSS).
If I change the original note, the transcluded note does not change.
See example below, where I modify Note one after I inserted it into another note. As you can see preview does not change. Furthermore, turning preview off and on does not make it update.
I had the same issue. Until it’s solved on version 0.9.3 I do one of the following things to solve it:
reloading with ´command/ctrl R´ solves it for me.
it also works if on the note that has the embed I go back (or switch) to another note and then once I return, the embed is updated
I know these are workarounds and not solutions, but in the mid-time hope it helps