Screen shake is automatically enabled upon Warframe losing focus in Windows (update: issue gone)

[LunarisDream]

When switching from fullscreen to windowed or vice versa (via Alt+Enter), the game will momentarily lose focus, after which screen shake is enabled despite the option being disabled in Graphics settings. This also occurs when Alt+tabbing out of fullscreen, and back in. Temporary fix is to toggle the option on, confirm, then toggle back off, but the issue will occur again when the game loses focus. Does not occur when Alt+tabbing while in windowed mode.

I suspect this may have to do with the recent implementation of windowed and borderless performance improvements, but that doesn't explain how it can happen when alt+tabbing out of fullscreen and back.

On a side note, the game, while in windowed mode, will not keep the mouse locked inside the dimensions of the game window. Shooting and left clicking is fine, but I use a side button on the Logitech G502, mapped as Button 5 as quick melee in Warframe, and using this button in windowed mode will sometimes cause the mouse to click outside the window instead, as if the cursor was already outside of the window.

Update: The issue appears to be gone after restarting the PC and relaunching the game the next day.

Edited November 27, 2019 by LunarisDream