File split sometimes shows more split lines

[DrChiper]

During the splitting of 1 large file into multiple files with the editor split function, I happen to see sometimes more then 1 green line (up to 3) to mark the split location (above and below chapter id's, the usual location for a split).
Selecting either of them does not seem to have any further impact and the text file seems to split just fine.
Do the extra lines indicate something I should consider?

[kovidgoyal]

The green lines indicate the top border of evey block level element your mouse is hovering over. If you have nested elements, you will get multiple lines.