Yes, that is a known problem, and until today, there is no solution to that problem. I think using HTML entities instead of the parenthesis works. The only other way around it that I know of, would be to create something similar to the columns plugin, where you have a start tag and an end tag and can put anything in between, even other Kirbytags.
Or, check out this post: Way to Use Parenthesis inside Kirbytag?