For a while now (months?) I have had an intermittent bug where stones occasionally display incorrectly. eg:
This particular stone should be Black and sometimes the bug just adds a couple of miscoloured bars without changing the overall colour like this.
Today I was able to RELIABLY REPRODUCE THE BUG on the HOME page by opening the board display options and clicking on the stone selection that was already selected:
Note that the bug typically occurs on the game page without prompting but I can’t reproduce that.
Environment: PC, Windows 10, Opera (exactly the same result with Google Chrome.)
Game: Play Go at online-go.com! | OGS (Please don’t comment on ongoing game.)