Tweets of muted user account keep being displayed in Search

[m-ueberall]

Describe the bug There's a Twitter account that happens to use a certain keyword in both its handle (as a prefix) and name. Muting it (mute symbol turns blue after clicking on it) either does not work at all (after a refresh, the symbol is white again) or at least not as expected.

To Reproduce Steps to reproduce the behavior:

1. Create a new search containing the single keyword "Gitea" (that's a self-hosted Git service).
2. Browse through the tweets in the newly created column until you find tweets containing photos, hashtags and contact information (phone#) which are clearly not related to forementioned service (posted on a daily basis, so details w.r.t. name/handle should not be needed here).

Expected behavior Muting said account should not display its tweets anymore (at least, not after a refresh).

Desktop (please complete the following information):

• OS: Linux
• Browser: Google Chrome
• Version: 92.0.x.y (applied to previous versions as well)

[koobs]

Confirming on:

• BTD: Up to and incl 4.4.4
• OS: Windows 10 Pro (19042.1288, x64)
• Browser: Firefox 93.0 (64-bit)

I've also checked and confirmed "Safe search settings" (Hide sensitive content and Remove blocked and muted accounts) were enabled, which had contributed to the issue in the past on other clients.

[eramdam]

Okay so I think I understand how to repro and I will need to look into it but here are my thoughts:

• User mutes are synced with your account's settings
• I obviously don't know how Twitter's search works but I guessing they don't (and probably can't at that scale) filter the search depending on what users you mute
• I have no idea if TweetDeck can actually access your user mutes in a way that would let me somehow patch this in 😬