No vga console after upgrading to 2.4.4

[Duormkim]

Hi all, after upgrading to 2.4.4 we are getting no vga console output on Atom J1800 hardware.
Dmesg output from 2.4.3:

Copyright (c) 1992-2017 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.1-RELEASE-p7 #10 r313908+986837ba7e9(RELENG_2_4): Mon Mar 26 18:08:25 CDT 2018
    root@buildbot2.netgate.com:/builder/ce-243/tmp/obj/builder/ce-243/tmp/FreeBSD-src/sys/pfSense amd64
FreeBSD clang version 5.0.1 (tags/RELEASE_501/final 320880) (based on LLVM 5.0.1)
VT(vga): resolution 640x480
CPU: Intel(R) Celeron(R) CPU  J1800  @ 2.41GHz (2416.74-MHz K8-class CPU)
...
vtvga0: <VT VGA driver> on motherboard

Dmesg output from 2.4.4:

Copyright (c) 1992-2018 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.2-RELEASE-p3 #17 e6b497fa0a3(RELENG_2_4_4): Thu Sep 20 09:04:45 EDT 2018
    root@buildbot3:/crossbuild/ce-244/obj/amd64/WvDslnYb/crossbuild/ce-244/pfSense/tmp/FreeBSD-src/sys/pfSense amd64
FreeBSD clang version 6.0.0 (tags/RELEASE_600/final 326565) (based on LLVM 6.0.0)
VT: init without driver.
CPU: Intel(R) Celeron(R) CPU  J1800  @ 2.41GHz (2416.72-MHz K8-class CPU)

...

vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0

pciconf -lv

vgapci0@pci0:0:2:0:     class=0x030000 card=0x0f318086 chip=0x0f318086 rev=0x0e hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Atom Processor Z36xxx/Z37xxx Series Graphics & Display'
    class      = display
    subclass   = VGA

Setting

kern.vty=sc

seems to fix the issue.

The same behaviour is shown by the 2.4.4 live installer with no graphical output after the bootup screen.

Is anyone else experiencing the same problem?