ID 402622 - Exporting textures in a specific archive is causing Mari to crash on OSX Mojave

Problem summary
Exporting textures in a specific archive is causing Mari to crash on OSX Mojave

GL Error 0x506 (invalid framebuffer operation)

Customer reported version

3.4v3

Customer reported platform
n_a_mac

Steps to reproduce

1) Open Mari and the attached project 

2) Right click on the first channel>Export Flattened>Export Current Channel Flattened 

3) Select a path for the textures to be saved and choose Export All Patches 

result: Mari crashes with a GL Error 0x506 (invalid framebuffer operation)

Expected behaviour
Mari should export the textures regardless on the OS used 

Actual behaviour
Mari crashes on OSX Mojave 

Workaround
Unknown

Reproduced by support
This bug has been reproduced in:

3.4v4 - OSX Mojave 10.14.5

3.4v3 - OSX Mojave 10.14.5

3.4v1 - OSX Mojave 10.14.5

3.2v1 - OSX Mojave 10.14.5 - regression

Unable to reproduce bug in:
3.4v4 - OSX Sierra 10.12.6 - Windows 10

3.1v3 - OSX Mojave 10.14.5 

Earliest version tested
3.1v3 - This issue no longer appears in this version and has regressed