A similar issue has cropped up for me (as well as other players I know) sometime over the course of the March 2022 patches. It's sporadic and impossible to predict.
For my game (windowed mode) Left and right arrows will not move the camera. Up and down will still work, but the camera WILL NOT move left or right - which is a problem in windowed mode where edge scrolling doesn't work.
Deleting the cache files seems to clear the problem - at least temporarily. I know a few people it's happened to more than once.
Rightclick the game in Origin and select Repair. that will fix it.
Edit:
Notice that it is a totally different issue than this year old thread you posted to.
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