CDcode error/bug - Modify Button Tag Info processing?

I am informed by a web master, Comodo Dragon browser V19.1, which was updated on my PC recently, is not processing the ‘modify button tag information’ correctly.

When I click on a button, to indicate my action/response, the button should change colour from orange to grey, to indicate acceptance. but it doesn’t.

My PC runs VISTA SP2 +all patches with MSE V4 & VISTA Firewall…