It's the same in Firefox and Brave.
Normally I keep ping and webgl unchecked for trusted sites, but I enabled them when diagnosing this issue. That means all boxes were checked for trusted sites.
Googletagmanager and siteimproveanalytics are the only two blocked scripts, and of course I tried allowing them as well.
With everything allowed and nothing visibly blocked, what's causing the hindrance? It would be nice to know, because this happens occasionally on other sites. Seems like there's a concealed setting that can only be overcome by disabling the extension.
