Template with extra linefeed

When {{prefixsee}} appears at the end of a section it throws an extra linefeed (see γιοττα-) - can be got around by omitting the gap between sections - but is it something which can be fixed?

This is presumably a bug in the #categorytree extension. There's not much I can do about it. You'll have to report it to the maintainers of that extension.

I've asked User:DTLHS - hope this is the right person. Cheers