L3 - Default When you are in tasklist and you try to filter the tasks of a filter with a variable that is a string, it does not work when the string only contains numbers.
In the screenshot you see that I am trying to filter my tasks with the "example_string" variable, that is a string. I put in the value "123", but the result is "No task matching filters found". However there should be a result, because in one of my tasks is the example_string that has the value 123. When I change the example_string to a double, the filtering is working fine.
So my acceptance criteria is:
When I filter tasks with a string variable and the string only contains numbers, the filtering is working fine.
Thank you 
Hi MarvinKern,
When creating a search with only numbers as a search attribute, we consider this as searching for a variable of a numeric type instead of a string variable. Otherwise, searches for variables such as 'Invoice Amount' might not be possible.
You can still search for Strings with this content, as described in our documentation:
As this behavior is documented, we don't consider this a bug and will close this ticket.
Cheers
Martin