@izyilq yes the only fix for now is to disable 'automatic brightness' in the displays control panel (which is kind of a bad fix)

Also present in beta 3 (reported to Apple), and only with automatic brightness turned on for internal displays. Do you have a MacBook Pro or other "pro" apple display?

@avi11 We are working on some technically tricky updates that require more testing than normal. Will push some of this to beta soon.

@digiangel234 yes this is a lot of exclusions, I wonder if it's messing up. I will tell you that "forgetting I excluded an app" has often been our #1 support issue - people don't understand that they have set it up, so that is why the notification exists this way. It should probably be more subtle anyway.

We are trying to avoid annoying people & not ever doing this more than once for the same app, but we will add a checkbox to prevent it entirely, for people who actually understand how disabling works.

@illegalnumbers yes this is a preview.

When you switch tabs, you are adjusting what the screen will look like in the future, not right now. If you want to adjust what the screen looks like right now, you don't have to change tabs, they will change automatically throughout the day and all you have to do is move the slider.

@ALIENQuake you would need to add it to the registry (the particulars depend on whether you are using our normal version or corporate) - try RegShot or one of the tools that will find the right keys for your version?

@PerryLi if you dim the screen a lot, this should be just fine for sleep.

f.lux's defaults are set to do a lot more for people with big bright screens (like desktops).

@akpool we agree - but are out of date with dev tools, and the virtual version works OK (we are not cpu intensive). Hope we can address this in the future.

Right now we only change the app mode and leave the system setting alone - this is because in Windows 10, the taskbar was kind of glaringly white with the day mode set. We will make a note to add an option to change both together also.