Cannot add a description to DNS zones/views

Description

Entries in DNS configuration don't have a 'description' field. Is it a bug ?

Distribution Name and Version

Debian 9

FusionDirectory Version

1.2

Plugin with the defect

PHP version used

7.0.22-3

Origin of php packages

debian testing

Plugin with the defect

PHP version used

7.0.22-3

Origin of php packages

debian testing

Steps to Reproduce

1. [First Step]
2. [Second Step]
3. [and so on...]

Expected behavior:

I should be possible to add a description to entries in DNS tab (zone, view, acl), like most of other entries.

Actual behavior:

The description column is displayed but it is not possible to add a description.

Reproduces how often:

Additional Information