Dell Pen PN579X exhibits upstream linuxwacom eraser bug

I found the 'Dell Premium Active Pen (PN579X)' that I just received and as presently sold by Dell elicits the problem described at https://github.com/linuxwacom/xf86-input-wacom/issues/39. I generated a patch file from https://github.com/linuxwacom/xf86-input-wacom/commit/3b338312eb275f2d9a602805931fa47d863a0209 and applied it to the source, rebuilt, reinstalled and can confirm that it did resolve the issue. The upstream fix is based against a newer version of the package. To backport, I did need to resolve a minor conflict so that would apply cleanly to the current version in eoan. I uploaded the patchfile as an attachment.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: xserver-xorg-input-wacom 1:0.36.1-0ubuntu2
ProcVersionSignature: Ubuntu 5.3.0-22.24-generic 5.3.7
Uname: Linux 5.3.0-22-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CurrentDesktop: ubuntu:GNOME
Date: Sat Nov 16 06:19:30 2019
DistUpgraded: Fresh install
DistroCodename: eoan
DistroVariant: ubuntu
InstallationDate: Installed on 2019-10-31 (16 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: Dell Inc. XPS 13 7390 2-in-1
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-22-generic root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
SourcePackage: xf86-input-wacom
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/02/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.0.9
dmi.board.name: 06CDVY
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 31
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.0.9:bd08/02/2019:svnDellInc.:pnXPS1373902-in-1:pvr:rvnDellInc.:rn06CDVY:rvrA00:cvnDellInc.:ct31:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 7390 2-in-1
dmi.product.sku: 08B0
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.99-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.1-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20191008-0ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1