No MUC is bold after the night

[roughnecks]

Describe the bug
When I open mod_conversejs (Prosody) at morning, no MUC is bold to show new messages, even if there are some.

To Reproduce
Steps to reproduce the behavior:

1. Read everything before you leave for the night.
2. Shutdown your PC and boot it up at morning
3. conversejs connects and MUC's messages are updated correctly but none of the MUCs are bold to indicate new messages are present

Expected behavior
I'd expect to see MUCs with new messages (arrived during the night) in bold.

Environment (please complete the following information):

• Desktop
• Browser: Chrome
• mod_conversejs from prosody, release version 10.1.6

Additional context

conversejs_options = {
        muc_history_max_stanzas = 0;
        muc_instant_rooms = false;
        muc_show_logs_before_join = true;
        notify_nicknames_without_references = true;
        allow_url_history_change = false;
        auto_focus = true;
        view_mode = "fullscreen";
        allow_registration = false;
        auto_reconnect = true;
        reuse_scram_keys = true;
        muc_clear_messages_on_leave = true;
        clear_cache_on_logout = false;
        play_sounds = true;
}