I haven't cleared my events in a few days, so they finally piled up to a reasonable amount where most weren't shown in my sidebar anymore. Following the "View All Events" link, in an attempt to figure out if there was anything demanding immediate attention, I noticed the events.php page only showed me the exact same alerts that were already in my sidebar, with entire blocks missing.

Luckily, there weren't too many, so I've cleared them the regular way, but I'm hoping a fix can come soon :x