Upgraded from 8.1.20 to 8.1.21 and now the project's template canvas component has overlays for all the templates contained within the canvas. Checking the documentation, I see that there was a change made to this component in 8.1.21. Is there a workaround for this problem?
Probably best to run this through official support channels if there's a regression. First I've heard anything, can't speak to a workaround.