QEMU is unusable from GTK frontend after upgrade to 4.0.0
After upgrading QEMU to version 4.0.0 on Alpine Edge, keys stick and mouse scrolling is extremely sensitive in guests if using the GTK frontend.
I can replicate this bug reliably by creating a guest like this:
qemu-system-x86_64 -display gtk -usb -device usb-kbd -device usb-tablet -m 512M -drive file=./alpine-virt-3.9.3-x86_64.iso,media=cdrom
After booting the system and pressing a key at the console for a few seconds, it will stick and repeat infinitely. If X is installed and a terminal emulator is opened, pressed keys will stick and repeat after holding for barely a second and mouse scrolling is way too sensitive.
This behaviour first began in guests after upgrading QEMU a few days ago.
Any ideas on how I can debug this as QEMU is unusable for me in this state?
(from redmine: issue id 10419, created on 2019-05-07)