Subject: bug#38802: 24.5; emacs unusable, unpredictably, with "k is undefined" for every key

From: Samuel Wales <[email-masked]>
Date: Sun, 5 Jan 2020 15:33:49 -0700

it is quite rare, but has been around for many emacs versions.

i could test my intuition that it might be related to type-break by
setting type-break to trigger frequently, then running passwd in the
shell, but i don't have it in me atm.