I recently updated my OS and apparently also my browser (macOS HighSierra 10.13.2; Chrome 67.0.3396.99) and ever since my TiddlyWiki does not automatically save and manual saves go to the wrong location.
This can be reproduced by
* Making making this directory structure: ~/Downloads/tiddlywikilocations/TiddlyWikis
* Save an empty TiddlyWiki in that folder.
* Open the empty TW and edit a tiddler then close it.
* See that it the "NOT SAVED" indicator is red

This was working two days ago. Any ideas? Did chrome make it where we can't do this anymore? Are there any workarounds?
I'm urgent for a fix. TiddlyWiki is an extension to my brain and currently it's a read-only extension to by brain.