Blank lines in listbox windows (created with /window -l) cause redrawing problems on those lines. Example:
//close -@ @test | write -c test $replace(a..b.c.d...e.f.g.h.i.j.k.l.m.n.o.p.q.r.s.t.u.v.w.x.y.z,.,$lf) | window -l @test -1 -1 500 200 | filter -fw test @test | .remove test
If you scroll up/down in @test, you can see remnants of other lines on the positions of the blank lines.
(/loadbuf doesn't cause this because, as starbucks_mafia pointed out, it replaces each blank line with a single space)
