Yes, i have the same problem
If you are using monkey as well, both mods listening to the 'R' key for camera is likely the source of many issues.
If you want to keep both mods, you can remap the 'R' key in monkey_configuration.xml, in the ToggleCameraModeKeyCode section.
Even after remapping, mix and matching the BXP cameras and monkey flycam is likely to have issues. Flycam does a lot of things to make sure it plays nice with the game including rebinding some of the hdrp processing and monitoring the game for camera change (pose mode cam, etc.).
I assume that mix/matching flycam and BXP cam won't work well. I've done all my testing of BXP without Monkey.
-T-