[Bug]: Tiktok slider puzzle doesn't work.

[knxwille]

Pre-Submission Checklist

• [X] I have checked the existing/closed issues to ensure this issue has not already been reported.
• [X] I am using the latest supported version of the browser.
• [X] I have tried disabling all browser extensions/add-ons to rule out interference from these.
• [X] I have tried clearing the browser cache and cookies.
• [X] I have checked with a new profile and the issue still occurs.
• [X] I have provided detailed step-by-step instructions on how to reproduce the issue.
• [X] I have included relevant screenshots or console outputs.
• [X] I have checked that this problem is not occurring in the latest version of Firefox ESR.
• [X] This issue is specific to this browser and does not occur in other browsers.

Bug Summary

As you know, tiktok have a slider puzzle system for identifiy user as human/robot detection. When the puzzle appeared, users must move slider below scrambled picture to solve it. In floorp, slider moves but no sliding animation to see current position of the slider. If user can't see current position of the slider, user can't solve puzzle.

Reproduction Steps

1. Open tiktok web site without login.
2. Start to watch any video.
3. After a while, tiktok shows you a slider puzzle to solve.
4. Move the slider below puzzle picture.

Expected Behavior

Slider moving animation and puzzle pieces moving animation must be shown to user.

Actual Behavior

No slider animation or puzzle piece animation.

Screenshots

https://github.com/user-attachments/assets/8901fc08-dab6-4e4f-8bcd-beedb4c3e7fa

Browser Version

11.19.0 (64-bit)

Operating System

Windows 10 Home Single Language

Additional Context

No response