Check attempts are not being updated with icingaweb2-2.11.1-1

Hi guys,
I observed that with icingaweb2-2.11.1-1 the check attempts are visually frozen at the GUI. Technically all seems to works fine, the history is being updated, notification are send out at hard state, but visually at the check state on the web gui its always stocked at 1/3 or 1/5.

I’m using:
centos-release-7-9
icinga2-2.13.5-1.el7.icinga.x86_64
icingaweb2-2.11.1-1.el7.icinga.noarch
mariadb-5.5.68-1.el7.x86_64
mariadb-server-5.5.68-1.el7.x86_64

To upgrade to icingaweb2-2.11.1-1 I had todo the following schema update:
mysql -u root -p icingaweb2 < /usr/share/doc/icingaweb2/schema/mysql-upgrades/2.11.0.sql

I did run into a failure, which I fixed with the following solution:

Does anybody have the same problem? Or how could I start to debug it?

Many thanks in advance!

Best Regards
David