Vagrant VM - pydev debugger: warning: trying to add breakpoint to file that does not exist (random /tmp dir) [SOLVED]

Suddenly debug started having issue in my project. For all the breakpoints I add, it will output the following:

pydev debugger: warning: trying to add breakpoint to file that does not exist: /tmp/goxDO5MEgb/valid/path/from/project_root.py (will have no effect)

The script runs fine. I've tried invalidating caches, making a duplicate of the remote Vagrant VM, removing all the breakpoints and re-adding, and checking path mappings to make sure the only on in there is the single Project Root item. I turned on PYCHARM_DEBUG, and all I get of substance is the call to the debugger to add the breakpoint, using the /tmp/..... path. It creates a random dir in /tmp, which is owned by vagrant user, but it never copies the file.

One thing I considered is I am on Windows where I've always been on Linux and I know Windows VirtualBox shares have symlink issues, but /tmp is not a shared folder. It's as if PyCharm never copies (or symlinks) the path in /tmp back to the project file. After execution, the directory made is just empty.

I don't know what is normal on a Vagrant VM Interpreter if it always copies the files to this /tmp dir for breakpoints. I'm inclined to think it is so you can still edit and save the file in the editor and it does not overwrite that file.

Thanks!