Hi Victor,
What version are you seeing this in? I used to see this because the DataPointVO.lastValue property would be set with the latest value of the point, and view initialization depended upon it being different from the current value (because it only sends changes to the browser, and if there is no difference, no change is sent, and the point stays as a block). Personally though, i cannot now recreate the problem.
A question though... The above condition should be cleared when the value of the point actually changes. Is this what you are seeing, or does the point always remain a block.