black area during transition of keyboard (in Web browser)

What problem did you encounter

black area of keyboard during transition

What is the current behaviour?

black area

What is the expected behaviour?

smooth app to full-screen

How to reproduce

phosh-black-area-keyboard-2020-06-20

Which version did you encounter the bug in?

purism@pureos:~$ uname -a
Linux pureos 5.7.0-1-librem5 #1 SMP PREEMPT Fri Jun 5 00:52:56 UTC 2020 aarch64 GNU/Linux
purism@pureos:~$ dpkg -s phosh | grep Version
Version: 0.3.0
purism@pureos:~$ dpkg -s phoc | grep Version
Version: 0.1.8
purism@pureos:~$ 

What hardware are you running phosh on?

• Chestnut