Wrong override for complex expr

[varac]

I have this alert expression which I'd like to override:

  - alert: BlackboxSlowProbe
    expr: 'avg_over_time(probe_duration_seconds[2m]) > 5'

The override looks like this:

  - alert: BlackboxSlowProbe_slow
    override: ["BlackboxSlowProbe"]
    expr: 'avg_over_time(probe_duration_seconds{instance=~"84.200.69.80|9.9.9.9|example.de:22"}[2m]) > 5'

But the resulted alerts look like this:

First, the additional new rule, where the expr is fine:

  - alert: BlackboxSlowProbe_slow
    expr: avg_over_time(probe_duration_seconds{instance=~"84.200.69.80|9.9.9.9|example.de:22"}[2m])
      > 5

But second, the overridden rule, where the label selector is wrongly placed:

  - alert: BlackboxSlowProbe                                                                                                                                                                                       
    expr: avg_over_time(probe_duration_seconds[2m]){instance!~"84.200.69.80|9.9.9.9|example.de:22"} > 5    

[robgordon89]

I run into this today, if you wish to resolve this you can easily just add {} to the query

  - alert: BlackboxSlowProbe
    expr: 'avg_over_time(probe_duration_seconds{}[2m]) > 5'