Duplicate frame markers not appearing V_25.2.3(build 4)

[Amal MP]

Duplicate frame markers not appearing when duplicating clips within the same timeline or copying and pasting edited clips from another timeline.

I've attached a screen recording for your reference.
1. Open an existing project in Adobe Premiere Pro with a clip in the timeline.
2. Duplicate the clip within the same timeline.
3. Check for duplicate frame markers.
4. Copy an edited clip from another timeline that contains the same clip.
5. Paste the edited clip into the existing timeline.
6. Check for duplicate frame markers.

Expected Result
Duplicate frame markers should appear for both duplicated clips within the same timeline and pasted clips from another timeline.

Actual Result
No duplicate frame markers appear in either scenario.

Adobe Premiere Pro Version
Version 25.2.3(build 4)

Operating System
Windows 11 (24H2)

GPU Driver & Version 
RTX 2060_Studio driver v576.02
Video Format
AVC_High 4:2:2@L4.2Variabl_46.8-50.0 Mb/s_50.000 FPS

[Rach McIntire]

Hi @Amal MP,

Thanks for submitting such a nice bug report. I know how important that feature is for many editors.  I'm sorry it's not displaying correctly.  Apologies, but I have to ask the annoying IT question—I can't tell from the video—is the "Show Duplicate Frame Markers" checked on?  Does this only happen with existing projects?  Does it work correctly in a new project?  I hope we can help you shortly

[Amal MP]

@Rach McIntire Thanks for getting back. 'Show Duplicate Frame Markers' is checked, and I've noticed this bug in both new and existing projects.

[Stan Jones]

@Amal MP,

I see your screenrecording. I'm not sure how you are copying/pasting, vs moving. But it demonstrates the lack of the duplicate frame marker.

I tried to replicate in 2 very simple sequences with the same clip in each. I duplicate the clip in sequence 1. Duplicate frame markers show. I copy it from sequence 2 and paste into sequence 1. Duplicate frame markers show.

Do you see the problem in a simple test like that?

Win 10; PR 25.2.3.

Stan

[Amal MP]

@Stan Jones 

Hi Stan Jones,

The issue is intermittent and unpredictable, occurring on both simple and complex projects. I've attached a screen recording for reference.

[Stan Jones]

@Amal MP,

Thanks for the screen recording.

I tested again, this time using the stacked panel/pancake editing you show. The first time I Ctrl+C/Ctrl+V to a different sequence, I "think" there was no duplicate marker when there should have been. After that, I could not create any errors. I also dragged with the mouse and Alt+drag, and changed tracks.

Stan

[Amal MP]

@Stan Jones 

Exactly, for a few clips, finding duplicates is manageable. However, as timelines become more complex and multiply, the 'Show Duplicate Frame Markers' feature's inaccuracies can be frustrating and undermine trust in its reliability.