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lorenm84878416
Inspiring
July 21, 2025
Question

Black Color leaks out of selection borders using Lasso tool

  • July 21, 2025
  • 1 reply
  • 200 views

I'm using:

- Photoshop V.  26.8.0

- Mac 0S 13.5 .2 Ventura 

I'm using Photoshop as a timeline dustbuster and image masking scheme to restore old movies.

 

To reproduce the bug:

 

1- Use the Lasso Polygon tool to create a selection around a specific area of an image,,

    feathered 5-20 px.

2- Fill the image with black or color.

 

3- With Option Delete fill the area defined over a specific frame.

 

I note a streak of black or color has leaked out of the selection area.

The direction from the selection appears to be random but consistent,

marring an area of the frame I don't want touched.

 

Best as always,
Loren

1 reply

A
Community Manager
AlekeCommunity Manager
Community Manager
July 21, 2025

Hi @lorenm84878416, thanks for reaching out! 

Would you be able to share a screenshot or a quick screen recording of the issue? That’ll help us get a clearer idea of what’s going on and how best to help.

Thanks so much!
Alek

*(If you mention me with an @, like @Aleke, I’ll get a notification and can respond faster.)*
L
lorenm84878416Author
Inspiring
July 22, 2025

Hi, Aleke-

 

Screen recoording is being prepared!  Since I'm dealing with a movie restoration using PS tools and timeline, I'll send you a short video showing the phenomenon, thanks to Screenflow capture. Thank you for your interest.

 

The behavior is consistent. During animation of a 5-pixel feathered mask, which usually changes shape incrementally every movie frame- very fastidious hand work which cannot be translated into an Action - whenever I apply the adjusted selection to the current frame I'm restoring, the selection color fills the area as expected, but also squirts out a streak of black (or, I assume, whatever color is inside the selection area) well outside the selection.  To have to stop and repair the streak each frame makes critical frame-by-frame masking completely unworkable .

 

Best as always,
Loren

-Lor -
Anshul_Saini
Community Manager
Anshul_SainiCommunity Manager
Community Manager
July 25, 2025

Hi Loren, thank you for sharing these details and preparing a screen recording. We will be looking forward to it.


To replicate this issue on our side, could you please confirm the following:
 • Are you working on a single frame in Photoshop or on a video timeline using the Video Layers workflow?
 • When filling the selection, are you using Option + Delete (Foreground Fill) with Normal blend mode at 100% opacity?
 • Is the selection on the same layer as the image, or are you working on a separate layer above?


Additional Info:
 • Does this happen only when the feather is set between 5–20 px, or even with zero feather?
 • Are the streaks always in the same direction (e.g., left, top), or completely random across frames?
 • Does reducing the timeline preview resolution or disabling GPU compositing (Preferences > Performance > Use Graphics Processor) change the behavior?


Once I have your answers and the video, I’ll try reproducing the exact steps on Photoshop 26.8 and confirm if it’s a regression or an environment-specific issue. If it’s reproducible, we’ll escalate it to the product team.


Looking forward to your reply!

Best,

Anshul Saini

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