If i enter a search value with whitespace like "delay filter" it encodes the whitespace and searches for "delay20filter" which clearly not works.
Can some else confirm this behaviour?
Yes, that is correct.
However it is not an issue. It is because the Reaktor forum is very old (it is not part of this forum, they only connected by links) and its code language is also old.
At that time, (ages ago 😋), the number 20 represented the empty space.
In the earlier days of the internet, they decided that URLs should only have a certain set of letters and punctuation allowed in them. Spaces weren't one of those. But people still wanted to communicate things like spaces in URLs, even though they couldn't actually put a space. So they decided that you could use a percent sign (%) plus the ASCII number of the thing you actually wanted. So wherever in a URL that you want to communicate a space, you can put "%20" and whatever program is looking at the URL will know that a space should go there.
So, that "20" in the Reaktor forum search is a relic of that period. It can not be changed or fixed. The only solution is a new forum…
