Chances are issue in no longer problematic to people in this thread but perhaps someone in future might stumble onto it and, like me, couldn’t find a solution in any of above.
Happened to me in 4.25.3 so I guess bug is still lurking around and under radar.
In order to fix it all I did was navigate to Viewport settings and toggle Game view. That’s it. Afterwards gizmo arrows magically came back to life.
Hope it helps.
