I got force-upgraded to Fenix a few weeks ago, I had checked out the betas and previews previously and was amazed at how much stuff is still missing or broken:

- Most extensions are not supported yet. Looks like we'll at least get this in Nightly soon:

  - https://github.com/mozilla-mobile/fenix/issues/14034

- Bookmark keywords are missing:

  - https://github.com/mozilla-mobile/fenix/issues/2497

  - https://github.com/mozilla-mobile/fenix/issues/12099

  - https://github.com/mozilla-mobile/fenix/issues/12100

- Tab Queue is missing:

  - https://github.com/mozilla-mobile/fenix/issues/470

  - https://github.com/mozilla-mobile/fenix/issues/12338

- Sharing a link from an app directly to another device is missing:

  - https://github.com/mozilla-mobile/fenix/issues/1523

  - https://github.com/mozilla-mobile/fenix/issues/11780

- Collections are confusing:

  - https://github.com/mozilla-mobile/fenix/issues/10417

  - https://github.com/mozilla-mobile/fenix/issues/11506

- Top toolbar is confusing:

  - https://github.com/mozilla-mobile/fenix/issues/11298

  - https://github.com/mozilla-mobile/fenix/issues/11314

- Somehow, they even managed to make opening a tab confusing:

  - https://github.com/mozilla-mobile/fenix/issues/10368

  - https://github.com/mozilla-mobile/fenix/issues/11833

  - https://github.com/mozilla-mobile/fenix/issues/12301

  - https://github.com/mozilla-mobile/fenix/issues/12774