Manager showing "offline" despite metrics being present

[dyasny]

Installation details
Panel Name:
Dashboard Name: Overview
Scylla-Monitoring Version: (can be found at the buttom of the overview dashboard) 3.5
Scylla-Version: 2020.1.2
Manager: 2.1

The manager indicator is defined as follows:
1+scylla_manager_task_active_count{type=~"repair",cluster=~"$cluster|$^"} + scylla_manager_task_active_count{type=~"backup",cluster=~"$cluster|$^"} * 2

This indeed has no results
However, the metric itself is not empty:

Value

scylla_manager_task_active_count{cluster="mycluster",job="scylla_manager",task="7b003917-5eeb-4f21-8312-5efabb963a40",type="healthcheck_rest"} | 0
scylla_manager_task_active_count{cluster="mycluster",job="scylla_manager",task="a24aec0d-c3e2-4afa-b6ff-0d5e767b9749",type="repair"} | 1
scylla_manager_task_active_count{cluster="mycluster",job="scylla_manager",task="c9e4133b-2628-438e-bdb2-0e6abadc4ddf",type="healthcheck"}