[Bug]: Avatar Movement Jitter on application refocus (alt-tab.)

[dzmitryj]

Environment

Alchemy_Beta_7_1_9_2516_x86_64

Description

When tabbing or losing focus of the application of any state, and clicking/re-establishing focus of the application, the avatar jitters into a 360 reversal of the current target vector with the camera resetting into 0,0,0 origin space of the avatar's pivot.

This issue was isolated to the "Moving resets the camera position" feature in Move & View, which solved it temporarily but a deeper look jumps out around the focus resetting the LLViewerJoystick arbitrarily.

Reproduction steps

1. Use latest stable beta version: Alchemy_Beta_7_1_9_2516_x86_64
2. Lose focus of window (alt tab, or interact with another application that loses application focus.)
3. Regain Focus.
   Expected: Movement state should retain forward vector.
   Actual: Forward vector is reversed on avatar movement, which entails default camera options to reset beneath the avatar creating a nasty experience bug.)

[dzmitryj]

This was tested on Windows, works perfectly. Have not tested Linux yet.

[FidgetNebula]

This is most likely caused by controlled/joystick input being enabled. In debug setting make sure the following two are set to False: JoystickEnabled and JoystickAvatarEnabled. If you happen to use a game controller/joystick device to play with, then this behaviour is just the current implementation state.