Okay, I am still not clear about when this is happening. If you follow these steps:
1) Install a clean copy of mIRC in an empty folder using the "portable" option in the installer.
2) run this copy of mIRC.
Do you see the issue in the Status Window titlebar the moment mIRC appears?
As I explained previously, in the status, channels or queries windows I see the problem, so when I open mIRC in the first status window that opens the problem appears, it just never happens in the mIRC titlebar:
![[Linked Image from i.ibb.co]](https://i.ibb.co/Zz48NKmv/Titlebar.png)
But status windows sometimes appear, but as you can check the color of the status window is the same as the mIRC titlebar:
![[Linked Image from i.ibb.co]](https://i.ibb.co/cXKNQq5X/Status.png)
This is because in Windows 11 it is possible to enable the transparency effect in the color settings and then Windows adjusts all windows with the tones of the image defined on the desktop.
And what happens is that sometimes all mIRC windows do not update the color when the transparency effect is enabled.
If I turn off the transparency effect, everything is normal.
mIRC window without transparency effect:
![[Linked Image from i.ibb.co]](https://i.ibb.co/TqnsjZDy/Titlebar-sem-efeito.png)
Status window without transparency effect:
![[Linked Image from i.ibb.co]](https://i.ibb.co/XxgW18bk/Status-sem-efeito.png)
The problem is that once mIRC updates the color in the windows and other times it doesn't, it's something random.