### ImageMagick version

7.1.1-18

### Operating system

Linux

### Operating system, version and so on

NixOS

### Description

https://github.com/ImageMagick/ImageMagick/issues/6655 was closed without being fixed

### Steps to Reproduce

Download the Perl package from CPAN and run its test against ImageMagick >= 7.1.1-16.

### Images

_No response_
montage.t tests still failing
This is a GitHub Issue
repo:ImageMagick
owner:ImageMagick
Title : montage.t tests still failing
Issue date:

--- start body ---
### ImageMagick version

7.1.1-18

### Operating system

Linux

### Operating system, version and so on

NixOS

### Description

https://github.com/ImageMagick/ImageMagick/issues/6655 was closed without being fixed

### Steps to Reproduce

Download the Perl package from CPAN and run its test against ImageMagick >= 7.1.1-16.

### Images

_No response_
--- end body ---

None