FuseOnlinePostgresExporterDown rule is not parsable

When I have installed Syndesis 1.11.x with enabled ops addon and I want to install application monitoring operator v1.1.6, the Prometheus application monitoring pod is failing and it is not able to start due to FuseOnlinePostgresExporterDown PrometheusRule. In the log is following error:

level=error ts=2020-08-13T14:47:02.291Z caller=manager.go:794 component="rule manager" msg="loading groups failed" err="group \"syndesis-infra-db-alerting-rules\", rule 1, \"FuseOnlinePostgresExporterDown\": could not parse expression: parse error at char 15: unexpected character inside braces: '\\\\'"

I have uploaded the log to the attachment.
This happens probably due to this change:
https://github.com/syndesisio/syndesis/commit/9e36a2a2a83aabdaca34ad3491f48fd60d4b4136