Thumbnails flicker after swiping to "What's New" tab

[Younes-L]

Checklist

• I am using the latest version - 0.20.4
• I checked, but didn't find any duplicates (open OR closed) of this issue in the repo.
• I have read the contribution guidelines given at https://github.com/TeamNewPipe/NewPipe/blob/HEAD/.github/CONTRIBUTING.md.
• This issue contains only one bug. I will open one issue for every bug report I want to file.

Steps to reproduce the bug

1. Enable "what's new" tab
2. Add some other tabs to allow swiping between them
3. Swipe to a tab other than "what's new"
4. Swipe back to "what's new" tab

Actual behaviour

All thumbnails in the what's new tab flicker off/on (or refresh) as soon as the swipe animation finishes

Expected behavior

Thumbnails are not refreshed since no refresh action is performed by swiping horizontally between tabs

Device info

• Android version/Custom ROM version: 9
• Device model: Pixel 2