Workaround (rush work):
In walk/tooltip.go, comment out lines 184 to 186.
And, when using taskbar Icons, the function walk.NewIconFromImageForDPI with PNG files avoid some issues on Windows 11 also. (using ICO files tend to cause isseus.)
https://github.com/lxn/walk/issues/797
walk.NewMainWindow() causes NewMainWindowTTM_ADDTOOL failed
Workaround (rush work): In walk/tooltip.go, comment out lines 184 to 186.
And, when using taskbar Icons, the function walk.NewIconFromImageForDPI with PNG files avoid some issues on Windows 11 also. (using ICO files tend to cause isseus.) https://github.com/lxn/walk/issues/797