I have my Firefox account synced across multiple devices, and I use Containers to manage work and personal browsing. The first issue is that Containers do not sync across devices. Custom containers made on one device do not appear in others, even after manually syncing. Setting certain sites to only open in one type of Container also does not sync, and needs to be duplicated across all devices manually. Further, when using Send Tab to Device the sending browser does not appear to take the Container the tab using into account, and the receiving device will open all tabs sent to it in a Personal Container. I can re-open in the desired container, and it works so far, but it would be ideal if: 1. Containers were accounted for when syncing, and 2. If Containers were accounted for when sending to another device.