Custom view no longer works in version 11

I was using ICS Calendar 10 with a custom view. My short code is [ics_calendar url="..." view="custom"] and I registered a few filters and actions using a code snippet plugin, roughly looking like this:

add_action('r34ics_display_calendar_render_template', function ($view, $args, $ics_data) {
// my custom code...
return $result;
}, 10, 3);

I updated to version 11 and now it just renders in month mode. I can switch between ‘month’, ‘list’, etc, but ‘custom’ just doesn’t work anymore. Has this feature been removed? I didn’t read anything about this in the changelog.

Any help is appreciated, thank you!