Object Mask causes Program Monitor to turn black in interlaced sequences

@�d�m_Bezzeg4186 @JX_SL @47550491 Can you please try resetting preferences and deleting media cache?

Delete the Media Cache and Media Cache files:
https://community.adobe.com/t5/premiere-pro/faq-how-to-clear-your-media-cache-in-30-seconds-in-premi...

If that doesn't work, try resetting the preferences:
https://helpx.adobe.com/in/premiere-pro/using/reset-preferences.html

@JX_SL Thanks for reporting the issue, if possible can you share the source footage with us to investigate further.

I have an issue with the new Object Maskt. The Mask works fine on Progressive Sequence, if i change the sequence to uper or lower field. The Mask and the full Monitor is Black and dont work.

MacBook Pro M1 Max 32GB Sequoia 15.7.3

Dear Adobe Support Team,

I am reporting a critical and fully reproducible issue in the latest Adobe Premiere Pro v26 release. To be absolutely clear: this occurs in the stable, non-BETA version.

System configuration:

• Operating System: Windows 11

• GPU: ASUS ROG Strix RTX 4070 Ti

• RAM: 64 GB DDR5

• System: high-end, up-to-date hardware configuration

• NVIDIA GPU driver: latest official release

Issue description:

• The automatic object-based masking / rotoscoping itself works correctly.

• The object is properly detected and tracked.

• However, the moment I adjust anything on the masked clip (e.g. apply an effect, color correction, opacity change, transform, etc.),
  → the Program Monitor immediately turns completely black.

• The image only reappears after rendering, making real-time editing effectively impossible.

Important note:
The exact same workflow works flawlessly in the Premiere Pro BETA version on the same machine and software environment. This strongly indicates a regression bug in the v26 stable release, not a hardware or performance limitation.

This issue is:

• not related to system performance,

• not related to GPU compatibility,

• but clearly a software bug affecting the stable release.

My questions:

• Is this issue already known to Adobe?

• Is there an official fix planned for this behavior?

• Is a hotfix or near-term update expected to restore proper Object Mask Tool functionality in the v26 stable version?

In its current state, one of the flagship features of Premiere Pro is only usable in the BETA build, which is not acceptable for professional production workflows.

I would appreciate a concrete response regarding the status of this issue and the expected timeline for a fix.

Kind regards,
Ádám