I have this reproduces on Debian 10.
2020-07-30 06:29:50 status installed grub-common:amd64 2.02+dfsg1-20+deb10u1 2020-07-30 06:29:50 status installed grub-efi-amd64-bin:amd64 2.02+dfsg1-20+deb10u1 2020-07-30 06:29:50 status installed grub2-common:amd64 2.02+dfsg1-20+deb10u1 2020-07-30 06:29:50 status installed grub-pc-bin:amd64 2.02+dfsg1-20+deb10u1
The above packages were installed before the issue occurrence.
I have this reproduces on Debian 10.
2020-07-30 06:29:50 status installed grub-common:amd64 2.02+dfsg1- 20+deb10u1 amd64-bin: amd64 2.02+dfsg1- 20+deb10u1 20+deb10u1 20+deb10u1
2020-07-30 06:29:50 status installed grub-efi-
2020-07-30 06:29:50 status installed grub2-common:amd64 2.02+dfsg1-
2020-07-30 06:29:50 status installed grub-pc-bin:amd64 2.02+dfsg1-
The above packages were installed before the issue occurrence.