The video needs a sort of "running commentary" of bullet points that change as the video progresses. To do this I added a basic Title to the timeline and stretched it to fit the length of the video (about 15 minutes). At the start this displays a single text element in the upper left corner, just outside the "TV safe" zone.
At the point in the video where the first bullet point comes up, I split the Title and added an additional Title element with the first bullet point, positioned just inside the TV safe zone (the border of the title element is two screen pixels to the right of the zone outline). The element is left justified.
As the video progresses, at each point where bullet points need to be added, changed or removed, the Title is again split and the changes made inside the same element container. This just seems easier than constantly going back and inserting a new Title, and doesn't require any tweaking to make sure the right text pops up at the right time.
What happens is that at each split after each text edit, the second title element -- the one inside the TV safe zone and the one being edited -- "creeps" a few screen pixels to the right. I'm not certain whether this occurs during the split, the editing or during the save but I am certain that I am not intentionally or accidentally moving the element itself. I can understand why the right border would move as text is added or removed, but not the entire element.
When viewed, as the video progresses and the title elements change at each split, all of the text inside the edited element visually "jumps" a few pixels to the right. Over time this leads to considerable creep from the original position.
This certain seems to be a bug causing title elements to shift position either when the title is split, edited and/or saved (not sure which yet). I cannot think of any reason why this would be an intended behavior. If it matters, the text has a gray gradient from top to bottom (0 to 127) and no other effects other than the occasional bold or italic.
Has anyone else noticed this or is willing to confirm?
Thanks!