Description
Currently, if the cluster name contains a full stop, Prometheus queries will fail with "Parse error: unknown escape sequence U+002E".
This is seemingly because Grafana tries to escape the full stop, but only uses one backslash instead of two (because Unicode escapes).
Interestingly, this was reported and marked as fixed in 2016: https://github.com/grafana/grafana/issues/4234. Perhaps this has regressed recently.