logitech G610 illumination and display fusion: some things just don't work

[ZigCat]

hi. i LOVE displayfusion, i've been using it for years now and i don't wanna be without it on my PC.
i bought a logitech G610 late last year, because i like mechanical keyboards and i like lit keyboards. the G610 does both.
also i like usless stuff like keys that light up when i press them and then stop glowing after a time or the other way around.

now my issue is, that when i use keyboard shortcuts, the base-button (ie.the [Alt]-key in [Alt]+[Tab]) gets stuck in the "pressed"-state of the light-up theme.
funnily enough, it only does this when display fusion is running, as i just found out. (after pestering the logitech support for weeks and months)

i have no idea what display fusion has to do with my keyboard and the way the LGS (Logitech Gaming Software) handles it's illumnation triggers, but i would be happy to no end if we could find a way to have displayfusion and my keyboard live in peace on my PC! =)

[Keith Lammers (Binary Fortress)]

On the DisplayFusion Settings > Alt+Tab Handler tab, is it enabled? If so, does disabling it seem to resolve this issue?

[ZigCat]

actually, it does solve the [Alt]+[Tab] issue. the [Win]+[Comma] still keeps the windows-button stuck. is there an option for that one, too? =)

[Keith Lammers (Binary Fortress)]

When the key is still lit, is the key state actually still stuck? e.g. when the Win key is lit, if you just press E, does Windows Explorer open?

[ZigCat]

nope. there is no real key press present in the system, just the logitech software controlling the light gets confused.
until you gave me the tip about the Alt+Tab Handler, the Alt-key and the right Windows button were constantly stuck, because i use Alt+Tab a lot as well als Win+Comma. (lots of programs to switch between as well as 3000+ wallpapers constantly rotating that i'd like to look at) =)

[Keith Lammers (Binary Fortress)]

Strange! It's like the keyboard isn't detecting the KeyUp event when the hotkey fires. I'm not 100% sure if there's anything we can do there, but I will pass this up to our devs to see if they have any thoughts.

[ZigCat]

actually, the keyboard/operating system receive the keyup event, but the part of the logitech software responsible for the lighting doesn't seem to get the message.

i trust you tell me if there is anything i can test for you? key combinations, programs, what ever. =)

[Keith Lammers (Binary Fortress)]

Is this your keyboard?
https://www.amazon.ca/Logitech-Backlit-Mechanical-Gaming-Keyboard/dp/B01CDYB8AG

[Keith Lammers (Binary Fortress)]

Also, if you use a normal Windows keyboard shortcut (like Win + E to open File Explorer), does that have the same issue?

[ZigCat]

it's the one with the brown switches (https://www.amazon.ca/Logitech-Backlit-Mechanical-Gaming-Keyboard/dp/B01CDYB8F6), but it doesn't change anything about the functionality.

after i've changed the alt+tab handler only the [Win]+[,] will keep the windows button light get stuck. (also i just learned, that using [AltGr]+[Tab] keeps the menu open, even when i let go of both keys. can only close with by pressing [Esc] or [Return])
[Win]+[Break/Pause], [Win]+[Tab], [Win]+[A], [Win]+[.B], [Win]+[C], [Win]+[E], [Win]+[F], [Win]+[G], [Win]+[H], [Win]+[.I], [Win]+[J], [Win]+[K], [Win]+[L], [Win]+[M], [Win]+[P], [Win]+[S], [Win]+[T], [Win]+[.U], [Win]+[X], ... in short: https://support.microsoft.com/en-us/help/12445/windows-keyboard-shortcuts

none of these except for [Win]+[D] and [Win]+[,] gets it stuck.
so for some reason, only ones that show the desktop screw with the button, but not [Win]+[M].

i have no idea what's happening. =/

[edit]
added dots to brackets that would otherwise trigger text formating thingies

[Keith Lammers (Binary Fortress)]

Ok, and just to make sure, Win + [Comma] and Win + [D] are fine if you exit DisplayFusion?