Try to fix bottom alignment not detected in some ttml 1.0 files

[OmrSi]

Hey, it's been a while. :)

I was working on a dfxp file and noticed that when I try to remove the top alignment from a line, it just returns when I open the file again.

Looking into the file, which is extracted from an online platform, I saw it had:

      <region xml:id="region.after.center" tts:direction="rtl" tts:displayAlign="after" tts:textAlign="center" tts:origin="10% 10%" tts:extent="80% 80%" />
      <region xml:id="region.before.center" tts:direction="rtl" tts:displayAlign="before" tts:textAlign="center" tts:origin="10% 10%" tts:extent="80% 80%" />

The old code says that yPos has to be more than 40, which is not always the case, as you can see.
Given that you also have extent, shouldn't this be how it works? That yPos + yExtent is higher than a certain threshold that makes the text in the bottom area?