New document white background or black, layer flickers

New document white background or black, layer flickers
Any idea or solution, will be appreciated

I do not know if it's a bug. as you can see in the video : every time i do a stroke the layer flickers. It only happen if I choose a background color if i choose transparent instead, no flicker.

Photoshop: file/new/new document.
no matter the color : backgroung/content...
No matter the brushes.
No matters windows ink on or off (wacom center)
no matter if [usesystemstylus 0] is insert in photoshop setting.

Photoshop 26.11.2
Wacom Intuos Pro(2025)
Wacom Cinti 16"
Nvidia RTX 4080
all driver up to date.

thanks