landscape mode renders oddly (chat, settings, contacts)

What problem did you encounter

landscape toggle renders apps poorly

What is the current behaviour?

landscape pretty much unusable

What is the expected behaviour?

landscape either disabled for apps that don't support it, or have it render and be usable by apps that do.

How to reproduce

Open contacts, chat, or settings
Toggle landscape
Witness the render issues

chestnut-phosh-landscape-2020-06-20

Which version did you encounter the bug in?

purism@pureos:~$ uname -a
Linux pureos 5.6.0-2-librem5 #1 SMP PREEMPT Mon May 4 16:51:03 UTC 2020 aarch64 GNU/Linux
purism@pureos:~$ dpkg -s phosh | grep Version
Version: 0.3.0
purism@pureos:~$ dpkg -s phoc | grep Version
Version: 0.1.7
purism@pureos:~$

What hardware are you running phosh on?

Chestnut

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