details causes issues

hi Phil,i have

after long time without timezone probs, i have a new problem. new events have no subject, and details causes issues. the details URL is crrupted.
please look:
http://www.ssc-donnersberg.de
event: 19.November 2015

but only in new events.

please help me!

https://ww.wp.xz.cn/plugins/google-calendar-events/