f.lux does not have any permanent effects once it's uninstalled.

There is one thing about updating your Intel driver. Intel drivers frequently add a power-saving feature called "DPST" that causes a visible effect. I always turn it off through the "HD Graphics control panel". If you have that control panel, look in "power" and "battery" and see if you can turn off "Display Power Saving Technology".

If that's not it and you think it's related to f.lux, please send a video to support at justgetflux.com

Classic f.lux sets your wake time to sunrise so the graph draws in the right place.
This is a very special preset and only "Classic f.lux" will do this.

I completely uninstalled f.lux 4.55, waited a few days, decided to try again, downloaded the current version (4.55) and installed it again.

Here are my machine specs:
f.lux 4.55 setting was "reduce eyestrain"
ASUS laptop G751JY.202, 10-Sep-14
processor: Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz 2.49GHZ
RAM: 24.0GB
64-bit Windows 10 Home version 1709, OS build 16299.125, x64-based processor
video card: NVIDIA GeForce GTX 980M, driver version 23.21.13.8859

And this is what I get when I close out of a virtual world program:
https://gyazo.com/b64612448ebb7b0eb8919167c88841dd

It's like that for a minute or so, then goes back to normal, and colour temperature resets to f.lux again.

Seems it only happens with this one program, but it bugs the hell out of me. Any help?

Would be interested to know if the beta fixes things also - also I think it might be possible that https with a port might not work?

See this thread:
https://forum.justgetflux.com/topic/4653/tinted-screenshots-or-games-missing-f-lux

The "waking up" alerts can be turned off in the Options menu.

The beta version also shows three sliders instead of preview when you click the graph, but we still recommend most people just use the single slider to adjust the current setting:

https://justgetflux.com/flux-setup4.exe

A work around I've found is another "last chance" to update to Windows 10.

Windows 10 - Assistive Tech Upgrade

This is a lot like using a sledgehammer to hang a picture but its all I could find. Thanks anyway herf! Keep up the good work.

DisplayLink, it's not for everyone...

@herf Unfortunatley seems like wider ranges option changes nothing for me. Still the same quick transition (warm-blue-warm on finishing taking screenshot)

alright, thank you very much! f.lux never affected my framerate at all so i prefer using it at night even for gaming. Thank you.

As I already told, none of other Windows programs which live in system tray use this "sliding" animation for closing of the main window. And I've never heard that some users had any problems with it. If a program has an icon in the system tray, it is clear that closing of the main window doesn't mean closing an application. Right now I use 12 programs which live in system tray, but only one of them use this closing animation. It is really non-consistent.

It doesn't happen often but I've encountered it a few times. I'm not sure if it's still in Task Manager but there still a filter, the colour just doesn't change and the icon is gone from system tray. I'll report back when I encounter it again.

Thanks, @herf. All that does, though, is make the sunset level almost as bright as daylight with a huge dropoff at the bedtime level. It doesn't change the length of the sunset period nor when it starts.

Thank you! That registry setting has solved both of my problems.

Now if only I could manually change monitor settings independently... Eg. secondary in "Movie Mode", primary in normal f.lux.

I appreciate the work you've put into a program which is free to use, along with the helpful and prompt support :)

Thanks for this note - we designed the timing for a totally different feature, and what you're saying makes sense.

The timing is designed for "disable by app" and people who alt-tab from Photoshop to email/chat and back a lot....so in that case going too fast would be not very good.

But in the case you're describing, going from a dark video to a white webpage, we should do better.