torbrowser 7.5.4 update seems to generate file with unique uuid in it
updating from 7.5.3 to 7.5.4 on linux seems to include a file named '.uuid' in the fonts dir that appears to be unique (comparing two different updated torbrowsers)
updating from 7.5.3 to 7.5.4 on linux seems to include a file named '.uuid' in the fonts dir that appears to be unique (comparing two different updated torbrowsers)