its due to update of WP on 4.4.1
on WP 3.9.10 works well
a sample of broken user notification:
—————-
Details
Reservation ID 12
Calendar ID 1
Calendar name New calendar
Selected language English
Check in < span style=”color: #666666;”>21 January 2016
Start at 14:00
No book items 1
—————-
I make pure instalation without any plugin and preinstaled plugins was disabled.
I use other language and after some edits the problem arised.
Maybe some broken code on css on
class-backend-reservation-notifications.php
or
class-woocommerce-order.php
but a phpcheck pass it ?? maybe a positive pass ??
I keep waiting for an answer how to sort it out. Thank you very much, Tomas