Firefox One Sec stops tracking if closed after unlock with website switching on

(This is technically an exploit, just to warn other users reading this.)

Hi! I am currently using One Sec with Firefox, and noticed that it would stop tracking YouTube if reopened after exiting. If I reopen Firefox and head to YouTube once again, the intervention does not pop up. Furthermore, the time I can spend on Youtube does not seem to be monitored by the re-intervention any more. Hopping to another website/tab and waiting the amount set in the ‘Intentional Website Switching’ seems to reset this behaviour; One Sec then continues to work normally. Playing around with the settings reveals that re-intervention has no impact on this. Disabling intentional website switching/allowing to open once seems to prevent this behaviour, as I would have expected.

Firefox Version: 138.0.1

One Sec Version: 1.1.7