disappear tomato session

[rzasharifi]

Describe the bug
after minimizing Firefox, tomato clock disappear

To Reproduce
Steps to reproduce the behavior:

1. start a tomato
2. minimize Firefox
3. open Firefox again
4. your tomato is gone!

Smartphone (please complete the following information):

• Device: Samsung j700f
• OS: Android 5.1.1
• Browser: Firefox 81.1.4
• Extension Version: 6.0.0

[JihanLoong]

I have the same situation in the Firefox on my PC, version 6.0.2. Thanks for the share.