Firefox Portable 67-71 (standalone) leaves behind an empty folder called mozilla-temp-files.

An example of steps to reproduce the issue on Windows PC:

1. Start Firefox.
2. Print a copy of any website.
3. Exit Firefox.

Upon exiting Firefox, an empty folder called mozilla-temp-files is left behind in \AppData\Local\Temp.

Another example to reproduce the issue is to watch a few YouTube clips and then exit Firefox.

The above behavior is observed on all Firefox Portable 67 and newer.

John, is there any custom settings that we can add to the existing .ini file to force the Firefox launcher to remove that empty folder upon exiting Firefox or do we have to wait for the next update to the Firefox launcher to solve this problem? Thank you.