opensearch from chrome has some characters resulting in 0 results

[pvgenuchten]

this problem does not occur on vanilla server, so my guess it relates to the dutch skin

this article describes how chrome facilites an opensearch use case, type the url, hit tab, type a term and hit enter. if chrome detects that this website has an opensearch interface, it will delegate the search to the opensearch mechanism of the website.

for geonetwork typing a url, tab and term works fine in chrome, however when hitting enter it will run a query including 2 spatial filters always returning 0 results

These filters are advertised in opensearch configuration, and may be suggested by the inspire opensearch recommendations...