Trijnstel reports that for users like INeverCry, Fastily, Túrelio and Herbythyme it's impossible to load Special:Log: it keeps loading and finally timeouts, Error 504 Gateway Time-out by nginx.
Setting a low limit doesn't help, while adding a type filter does, e.g. https://commons.wikimedia.org/w/index.php?title=Special%3ALog&type=block&user=INeverCry
Those are all users with tens of thousands log entries.
Version: 1.22.0
Severity: major
URL: https://commons.wikimedia.org/wiki/Special:Log/INeverCry?limit=1
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=39508