What is up with the `quad-jpeg.tif` test file?

[Alvin Wong]

The 5.0.6 appimage tells me the file contains unsupported colour space.

On 20/5/2022 2:09, L. E. Segovia wrote:
> According to file, that file is a YCbCr, JPEG-compressed TIF.
>
> Can you check with an old enough (say, 4.4.8 or 5.0) build, to see if 
> it's got anything to do with my changes to TIFF (especially the ICC 
> profiles)?
>
> amyspark
>
> On 19/05/2022 14:39, Alvin Wong wrote:
>> Hi,
>>
>> In 
>> https://invent.kde.org/graphics/krita/-/tree/master/plugins/impex/tiff/tests/data 
>> there is a test file called `quad-jpeg.tif`, which has been outside 
>> of the sources folder since it was first committed in 
>> https://websvn.kde.org/?limit_changes=0&view=revision&revision=814296, 
>> 13 years ago, which to me means it had never worked in Krita before. 
>> When opened on a recent build, it shows up pretty corrupted (see 
>> attachment).
>>
>> Is this something we should look into fixing? My quick search didn't 
>> yield any related bug reports.
>>
>> Cheers,
>> Alvin
>>
>>
>