It's a problem, but I'm not sure what the solution is. Probably would be hard to put any solution in easily, the way layout works it would be pretty hard to solve this in FoldingText's current code.
Longer term I'm still not sure that I see any great solution. I could try to figure out the longest "extra" text that's show to the left and size things such that it will all fit. But that could cause other problems, for instance if there's a frequently updating item to the left whose size changes... would cause the entire view to jiggle back and forth as it is updated.