[Bug] "Show watched items" button and thumbnail playback progress bar on "What's New" tab doesn't work for Bilibili subscriptions

[Lander-Hatsune]

Checklist (Your issue will be automatically closed if you delete this part)

• I make sure that there are no existing issues - open or closed - which I could contribute my information to.
• I understand that issues with limited impact, such as those occurring on specific devices or under specific network conditions, will not be fixed.
• I am able to reproduce the bug with the latest version given here: CLICK THIS LINK.
• I have attached the error report in the issue.

Describe the bug

1. "Show watched items" toggle button on "What's New" tab doesn't hide watched Bilibili videos from list, while it does hide/show watched Youtube videos;
2. The red progress bar indicating last playback progress (available for Youtube videos) isn't displayed for Bilibili videos.

Frequency

100%

Steps to reproduce the bug

1. Install
2. Subscribe to at least one video producer on Bilibili, watch his/her latest video (fast forwarding to the end or dragging the progressbar)
3. Go to "What's New" tab (by default the last tab), update feed (refresh page)

Device (e.g. Pixel 9 Pro)

Samsung Galaxy S23FE

Error report

Additional context

[Lander-Hatsune]

A screenshot to illustrate the issue.

I have watched video A and B.

1. Video A could be hidden if I press the eye button "Show watched videos" (second button top right);
2. While video A got a red progressbar on its thumbnail, video B didn't.