Suspended tab disappears when container is hidden

[duttyend]

Dear @rNeomy ,

First of all, thank you very much for your awesome extension !

I noticed a problem when using Mozilla's Multi-Account Containers extension (currently version 4.0.3). I sum-up below the steps to reproduce this bug :

1. create a new container
2. open a tab inside
3. suspend this tab
4. click on "Hide this container"
5. click on "Show this container" -> tab is gone

I hope it is easy to fix... Thanks again and have a great day 👍