And by the way, the FAQ doesn't say you had to deliberately edit the favorite visuals to induce the bug. It only says you had to synch twice in the same session and it would double that section of the config.ini. Each hit of the synch button causes an exponential growth of the config.ini size.

In my testing, the one thing I see that could cause that problem (config.ini can't be added to) would be a too-large config.ini file. If I deliberately paste extra crap into my config.ini, it quickly becomes too large for the edit control and I see exactly the same behavior you describe.