Conflict between linux-generic-hwe-18.04 and virtualbox-guest-x11-hwe (arch i386)

How to reproduce this bug?
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1.) create a minimal ubuntu with debootstrap (arch i386)

2.) use this sources.list:

deb http://de.archive.ubuntu.com/ubuntu bionic main restricted universe multiverse
deb http://de.archive.ubuntu.com/ubuntu bionic-security main restricted universe multiverse
deb http://de.archive.ubuntu.com/ubuntu bionic-updates main restricted universe multiverse
deb http://de.archive.ubuntu.com/ubuntu bionic-proposed main restricted universe multiverse
deb http://de.archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse
deb http://archive.canonical.com/ubuntu bionic partner

3.) update package lists

apt-get update

4.) install kernel 5.3.0

apt-get install linux-generic-hwe-18.04

5.) install virtualbox

apt-get install virtualbox virtualbox-guest-x11-hwe virtualbox-ext-pack

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actual result:

linux-generic-hwe-18.04 is being removed due to invalid dependencies

expected result:

linux-generic-hwe-18.04 keeps installed