I'm experiencing some strange behaviors each time I upgrade Flutter, either from stable to stable, or stable to beta/dev or beta/dev to stable, etc...

VSCode doesn't recognize some valid arguments and shows them as errors.

Like here, on the BoxDecoration(). It shows that the parameter colors isn't defined.

When opening up the available parameters for this Widget, something other strange happens... it shows List:

I tried flutter clean in a terminal and Flutter: Clean Project in VSCode, but none of these help. The only thing that helps, is restarting VSCode.