Illustrator dosent show difference in previwe mode - between 100% black and 40 30 30 100 Black

[Michal_T]

Hi, Illustrator stopped showing difference in black in preview mode.

Between 100% black and 40 30 30 100 Black there is no difference!

Did anyone else noticed it is very urgent matter to us it happened on all 4 users accounts.

It is a urgent matter - please fix this!

[Ton Frederiks]

Are your Preferences > Appearance of Black set like this?

[Michal_T]

Hi, thanks for the reply -  I have the correct settings its only a problem with the newest version I reverted to 28,6 and there is no problem.

[Doug A Roberts]

This is in a CMYK doc in version 28.7.1, with your rich black definition and 100K:

Which version are you using?

[Michal_T]

We are using the same version 28.7.1 and this bug showed up few days ago with the update,

It works fine on 28.6

Do you have a color mode set to CMYK and most important in separation window overprint preview checked on?

Kind Regards

[Ton Frederiks]

Preview works fine in 28.7.1, but Overprint Preview should also show the difference.

Looks like Overprint Preview is broken in showing the difference between normal and rich black.

Can you report it here:

https://illustrator.uservoice.com/

and post the link to the bug so others can vote?

[Michal_T]

Hi, I have reported this bug:

https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/48836909-broken...

[Ton Frederiks]

Thanks, voted.

[Doug A Roberts]

With overprint preview on you're right. Compared with 27.9.1:

[Timotei0101]

Per favore risolvete questo problema, per il mio lavoro è fondamentale!

Preciso anche che il nero 100% in overprint su altri colori non viene vizualizzato corretamente (vedi allegato)

[Ton Frederiks]

This is a user forum, we cannot solve bugs. The only way to help solve the problem is to vote and describe it on UserVoice.

[Captivating_Breeze5DEB]

I'm experiencing the exact same issue.
Illustrator has become useless when it comes to correctly previewing work being prepared for printing.