Illustrator transparency mask effect issue

[DD.B]

https://shared-assets.adobe.com/link/dae1cf0e-ada5-4473-794a-9431cc8cb875

Hi. I'm using illustrator(latest version) on macbook.

In the video(link above), it shows that the mask effect throgh transparency panel doesn't work instantly.

When I move white rectangle, then the artboard must be changed, but it isn't. (about 40:00 in the video)

If I want to see the result in artboard, I have to check and uncheck "clip" box of transparency panel.

How can I use that effect with instantaneous result ?

[Monika Gause]

Issues with opacity masks have already been reported:

https://community.adobe.com/t5/illustrator/opacity-mask-does-not-redraw-in-real-time/m-p/11744389?pa...

There might already be a bug report on Uservoice https://illustrator.uservoice.com/

[DD.B]

Oh thanks. There was a report already. 

I tried same effect on Window 10, but it works very well... It is weird. Windows and Mac both use latest version of Illustator.

[Ton Frederiks]

https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/42412372-opacit...