MX Linux Forum

Hm... that's interesting. I also use the default light theme but nevertheless I went to MX Default Look and reselected this... and now it works. Go figure.

EDIT: in Appearance I also changed themes from the Greybird theme to one of the Xfce themes... and that theme makes the lines disappear. Simple as that. I'll readjust the theme* so that I have the colours as I like them and also those pesky lines.

* "listviewstyle = 0 # 0 = nothing, 1 = dotted 2 = solid" is what has to be changed.

Great! That is an annoyance.
It is something I always correct on a new install.
I usually turn off Type and hover over the line
for the popup tag when I want to confirm Type.