In T197729 it was identified that the current treatment for empty lines is suboptimal in cases where an empty line addition or removal precedes or concludes a moved paragraph. A couple of solutions already suggested:
- allow the marker to span the entire length of the line
- place the moved paragraph arrow outside of the diff to make the separation between added/subtracted empty lines and moved paragraphs clearer
As https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/MobileFrontend/+/444756/ shows, we can make these new lines full width. We can also remove the background color altogether or use 2 different colors.
There is also an opportunity in T90948 to rethink colors here.
We also talked about moving arrows outside the diff area (see https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/MobileFrontend/+/444755/)