My Achievements aren't appearing on the screen when unlocking

I'm an Xbox Insider on Alpha- Skip Ahead. Turns out this is an issue with the latest update - https://www.reddit.com/r/xboxinsiders/comments/f9ch75/achievements_notification_does_not_appear_on/

Hi, yes. I've checked each step. Console is definitely online as it just updated Modern Warfare. I've power cycled, restarted etc. Nothing listed there has fixed the issue.

This started a couple of days ago. They're unlocking fine when I check them using the menu, however the lovely noise and banner doesn't appear when they're unlocking.

I definitely have the notifications banners switched on. Achievements is ticked too.

Power cycling my console has NOT fixed the issue either.

How do I get the achievement banners back?

Hi there did you check the
support?

They popped up like any other achievement unlocks when i was playing the game. They were all unlocked through playing the Crimson DLC playlist too.

It's weird, they don't appear as unlocked when viewing the game on my achievement list but when i select Halo 4 from the list and view all the achievements for the game they are unlocked there. It's like they've only half unlocked somehow. I deleted the
pack, cleared the cache and downloaded it again and they still aren't showing up right.

I came here as I appear to have the exact same problem with my 360. Achievements I've gained since 27/12/14 aren't adding properly. My Skyrim game for example, on the achievements screen, says 900/1550, achievements 45/75, which is wrong. But when I click
on the game on my 360, it shows 50/75 unlocked, 1000/1550, which is correct.

I've played other games since and unlocked achievements (Minecraft, Walking Dead), only to have the same problem, so I know it isn't game exclusive.

My Gamerscore on my 360 dashboard is correct (23783), but it is wrong everywhere else (23428). Again, this difference seems to be relating to achievements unlocked since yesterday.

Any help would be greatly appreciated!