Bugs? – Plumber Classic Review

When I tap on a pipe, there's a weird purple circle that shows up and won't go away. And sometimes the purple circle gets stuck and keeps spinning around an unrelated pipe. No matter how many times I click on that, it won't go away, which is a bit annoying. I like that there is no timer, and that the puzzle is sufficiently challenging right from level one.
Review by SeaGreenCoral on Plumber Classic.