Video Annotation: 'Go one step forward' and 'Hop forward' buttons behave identically since 1.21

[Buckler89]

Describe the bug
Since version 1.21, the command bar in the Video Annotation component no longer allows single-frame hopping.
Both the “Go one step forward” (Alt + →) and “Hop forward” (Shift + Alt + →) buttons now behave identically — they both move forward by the number of frames defined in the “Hop forward step” setting.
If the “Hop forward step” value is set to 1 (default is 10), both buttons move forward by one frame, but this makes it impossible to perform a 10-frame hop.

To Reproduce
Steps to reproduce the behavior:

1. Open a video annotation task.
2. Try moving forward one frame using Alt + →.
3. Try hopping forward using Shift + Alt + →.
4. Observe that both actions move forward by the same amount (the hop step value).

Expected behavior
The “Go one step forward” button (Alt + →) should always move forward by one frame, independently of the “Hop forward step” setting.
The “Hop forward” button (Shift + Alt + →) should move forward by the number of frames defined in the “Hop forward step” setting (default 10).

Environment (please complete the following information):

• OS: Ubuntu 22.04
• Label Studio Version: 1.21.0

Additional context
This issue affects fine-grained frame navigation when annotating videos, as it is no longer possible to both move by one frame and hop by multiple frames without changing the settings each time.

[heidi-humansignal]

Hello,

Thank you for your feedback! Our engineering team is aware of the issue and will address it soon.
Appreciate your patience!

Comment by Oussama Assili
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