The viewport controls for the camera don’t rotate/tumble/etc. correctly, they seem locked to one direction and one axis. Manipulating objects works ok ie. using the manipulators so I think that the mouse movement is being read correctly but for whatever reason the camera itself does not behave properly.
I tested this with 4.24, 4.27 and 5.0 and see the same behavior.
The speed of movement was also an issue, but i was able to adjust that to slow it down. Now it’s just broken axis.
Here’s a link to the problem. You can see midway through the video when I focus on an object, the camera will just rotate in one direction i can’t reverse the direction or move predictably.