Fix long annotation display glitch

[Renaud009]

Long annotation (depending on current width) make the rendering engine ignore line jumps.
Long annotation are forced to appear on the same line which lead to horizontal scrolling.
We need long annotation mainly minimaly for paragraph annotation but potentially for much more.

Explore workaround & long-term fixes:

• Use discontinuity upstream (workaround) with overlapping limitations.
• Create an alternative way to display long annotations.
• Fix the rendering engine itself (just like the relation arrow can be splitted on multiple lines).