in a comment, when clicked, gets loaded without the last fullstop and therefore yields an empty set.
If you manually at the fullstop to the url bar it works.
adding two fullstops does not solve the problem: they both get stripped off.
(note too that in “field” the inclusion of ‘&’ as a character in the field renders the filter useless
so this would not work:
[I removed the ‘&’ to get the first example to work, so this value (~ Eckl. & Zeyh.) no longer exists]).