Comment # 12 on bug 1117833 from Victor Zhestkov

I found old copy of Tumbleweed repo - 20181015, the newest one with GNOME 3.28
I found. And it seems different with this behavior. There are messages in the
journal like this:
Dec 26 16:08:53 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client
bug: timer event21 debounce: offset negative (-7ms)
Dec 26 16:10:47 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client
bug: timer event21 debounce: offset negative (-6ms)
Dec 26 16:10:47 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client
bug: timer event21 debounce short: offset negative (-19ms)
Dec 26 16:11:47 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client
bug: timer event21 debounce: offset negative (-7ms)
Dec 26 16:11:47 MYHOST org.gnome.Shell.desktop[4090]: libinput error: client
bug: timer event21 debounce short: offset negative (-20ms)
But there are no repeating keys in the interface and it seems more responsive.
I didn't find the copy of the repo close to the time period the issue probably
appeared. It's probably 20181022 or a couple of days prior.
I suppose it's related to gnome-shell or mutter.