It looks like the fix for this in Focal landed together with the security update in 2.4.7-1ubuntu2.20.04.2 (2.4.7-1ubuntu2.20.04.1 doesn't look like it ever got copied to focal-updates). I confirmed the patch is still present in the current version in Focal (2.4.7-1ubuntu2.20.04.3).
It looks like the fix for this in Focal landed together with the security update in 2.4.7-1ubuntu2. 20.04.2 (2.4.7- 1ubuntu2. 20.04.1 doesn't look like it ever got copied to focal-updates). I confirmed the patch is still present in the current version in Focal (2.4.7- 1ubuntu2. 20.04.3) .