I just tried with 4.18.0-14-generic, the same issue happens there as well.
And, another school reported the issue on HD Graphics 630:
root@pc02:~# lspci -nn -k | grep -A 2 VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 630 [8086:5912] (rev 04) Subsystem: ASRock Incorporation HD Graphics 630 [1849:5912] Kernel driver in use: i915
I just tried with 4.18.0-14-generic, the same issue happens there as well.
And, another school reported the issue on HD Graphics 630:
root@pc02:~# lspci -nn -k | grep -A 2 VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 630 [8086:5912] (rev 04) Subsystem: ASRock Incorporation HD Graphics 630 [1849:5912] Kernel driver in use: i915