Mask Path Keyframes Not Animating in Premiere Pro Beta (v25.6.0)

[MiGt]

Description: I’m experiencing a bug in the current Premiere Pro Beta (version 25.6.0) related to manual masking and keyframe animation.

When I draw a mask using the Pen tool or shape tools and attempt to animate it using Mask Path keyframes, the mask does not respond to changes. Even after enabling the stopwatch and adjusting the mask on different frames, the animation does not register—both keyframes remain identical, and the mask stays static.

I’ve confirmed this behavior in multiple projects and tried the following workarounds:

• Toggling the Mask Path stopwatch
• Manually adjusting the mask shape on different frames
• Using different effects (Gaussian Blur, Lumetri Color)
• Resetting workspaces and preferences

None of these resolved the issue. It seems the new masking system in the Beta is not properly linking manual mask adjustments to keyframe animation.

System Info:

• Premiere Pro Beta v25.6.0
• Windows 11 Pro 64
• GPU: Nvidia GeForce RTX 3080 Laptop

This bug is blocking my workflow, especially for subtle object masking in low-resolution footage. I’d appreciate any updates or guidance on a fix.

Thank you for your support!

[charles f stewart]

commenting to following - having same issue on macOS

seqouia 15.7.1 

premiere 25.5.0 (build 13)

m2 pro 32gb ram

[kyle5FBF]

Same issue here. Unable to manually adjust regular pen mask path keyframing, which is super unfortunate. Hope they update it really soon.

Premiere Pro 25.6.0

Windows 11 Home - Version 24H2

AMD Ryzen 7 7800X3D 8-Core Processor

Nvidia RTX 5070 TI Graphics Card

[Ann Bens]

For animating masks manually you need to be in FRAME mode (program monitor)

Use object masking in Premiere Pro

[caiov72928250]

But...why? Don't let me put keyframes if they wont work. This is not a good design, they should block keyframe addition and show some message like "change to frame mode to use keyframes".