I came up with this hack to get rid of all the debug spam in r234 (like "has map button shown", "o: 234234234" etc).
Open file World of Warcraft\Interface\AddOns\beql\questtracker.lua in a text editor.
Delete all the lines where a word "print" exists (there's 6 of them).
That's it :)
I give my thanks to the authors, it's the only quest tracking addon since 3.3 changes that meets all my requirements :)