Solved Strange issue with translations and missing translations

I already checked for errors in the language files, but can't find them.

Line 111: COM_KUNENA_ALL_DISCUSSIONS = "Recente onderwerpen"
Line 117: COM_KUNENA_MENU_LATEST_DESC = "Recente onderwerpen"
Line 146: COM_KUNENA_VIEW_TOPICS_DEFAULT_MODE_TOPICS = "Recente onderwerpen"

But although translations are present, they are not shown on frontend. When I make an override for i.e. COM_KUNENA_VIEW_TOPICS_POSTS_MODE_DEFAULT translation is shown.

Same for

Totaal aantal gebruikers online: 1 Member and 52 Guests Online

Line 59: COM_KUNENA_WHO_ONLINE_MEMBERS = "leden"

Kunena 5.0.10 checked with default template Crypsis as well to make sure it is not a template issue.

Have you installed the newest language package from our download page? Dutch language is complete translated.

Yes I have. Installed it twice to make sure. And as you can see in my original question, language strings and translations are present, but not used/found?
This might illustrate the problem even better:

nl-NL.com_kunena.views.ini (2 hits)
Line 166: COM_KUNENA_USER_ORDER = "Stel berichtvolgorde in"
Line 167: COM_KUNENA_USER_ORDER_KUNENA_GLOBAL = "Standaard"

nl-NL.com_kunena.ini (2 hits)
Line 121: COM_KUNENA_USER_ORDER_ASC = "Eerste bericht eerst"
Line 122: COM_KUNENA_USER_ORDER_DESC = "Laatste bericht eerst"

Found the issue. It are the slashes in the address in line 65 in the views.ini. Change the address from:

<a href=\\"_QQ_"%s\\"_QQ_">contributors</a> :

to

<a target="_QQ_"_blank"_QQ_" href="_QQ_"%s"_QQ_">contributors</a> :

(or remove the slashes)

Thx! Removing slashes works!