I am seeing a problem, and was able to reproduce in Raytraced mode. Here are the repro steps:
- Create a cube
- Turn raytraced mode on for the perspective viewport
- Edit max iterations to 10000
At this point you might already not be able to see your navigation, but if not:
- Let it converge a little, past 200, say
- Edit iterations to 200
- Rinse and repeat if necessary
At some point, the navigation will become ignored, and it is necessary to click in the max iterations field or resize the viewport to provoke a return to functioning.
Note also that when editing the max iterations between large and small values, the display of the current/max iterations in the HUD becomes clipped, so you cannot see the whole value/see too much and thus some of the older value.