Campaign misssion "Always Forward" not counting as completed

Hello everyone,

for the past 2 days I have been trying to complete the challenge in BF6 to complete all campaign mission on hardcore difficulty and I managed to do that. But the last mission is not counting as complete so I'm stuck at 8/9 and can't complete the challenge.

I tried restarting the whole mission 4 times so far sill no luck.

Restarted the game multiple times, verified the game files (thrue steam).

Anyone else had this issue and has a solution or it's some rare bug and I'm just one of the very few unlucky ones to get it?

Thx in advance