/metrics-tab matches a rule in one of uBlock Origin's default blocklists, so let's name it something else.
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sub metrics_tab : Chained('job') PathPart('metrics-tab') Args(0) {
sub metrics_tab : Chained('job') PathPart('metric-tab') Args(0) {
[% INCLUDE makeLazyTab tabName="tabs-charts" uri=c.uri_for('/job' project.name jobset.name job 'metrics-tab') %]
[% INCLUDE makeLazyTab tabName="tabs-charts" uri=c.uri_for('/job' project.name jobset.name job 'metric-tab') %]