[schapplm]

with delay time 0 sec nothing happens/is updated [...] with delay times >0 sec it works

I was able to reproduce and fix the error:

Code:

Direct Download: https://github.com/SchapplM/xbmc-addon-service-watchedlist/archive/testing.zip
Repo: git clone https://github.com/SchapplM/xbmc-addon-service-watchedlist.git -b testing

I will merge this to the official repo soon.