Grafana variable filter cannot handle single backslash

I have data coming in from FluentD into Loki which is actually a domain login format.

domain\paul

When I create a Variable, and use label_values, It lists all entries from this fine, but when I choose it and apply, the \ is probably not escaped and therefore the filter doesn’t work

Probably related to https://github.com/grafana/grafana/issues/24478