Earlier quoted context omitted.
Do not use Temporary Containers. This extension to Multi-Account Containers looks great at first -- its Automatic mode spins up a new container each time you open a new tab, then switches that tab to an existing container, should one be associated with the TLD you visit. The problem is that Temporary Containers does not delete these temporary containers. They accumulate in the MAC containers list. There is no way to…
Temporary Containers has an option "Delete no longer needed Temporary Containers" which defaults to 15 minutes, but can also be set to immediate. Are you setting this option to something else? Temporary Containers works really well for me. I have per domain isolation, which only breaks very very few sites (Gmail and Outlook 365). For those I have regular persistent containers. Alternatively, I can always open a new p…
There are related issues opened for Temporary Containers, MAC and Firefox and at least from the public discussions not much is happening about it.