unlock minimize keyboard render issue

What problem did you encounter

render issue with keyboard minimize after unlock

What is the actual behaviour?

render issue

What is the expected behaviour?

keyboard minimizes without render issue

How to reproduce

Unlock screen, click minimize keyboard.

What hardware are you running on?

amd64 qemu image
Librem5 devkit
other (please elaborate)

Relevant OS information

Which kernel are you using?

Please paste the output of uname -a below.

Linux pureos 5.2.0-rc2-next-20190528-g0e8e80ff1 #1 SMP PREEMPT Wed May 29 06:34x

Which OS are you using?

Please paste the output of cat /etc/os-release below.

PRETTY_NAME="Debian GNU/Linux 10 (buster)"
NAME="Debian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

Any other information that may be helpful?

mesa was built from source. https://source.puri.sm/snippets/55