Buggy UI

[mlnitoon2]

[KingGamingYT]

any more details would be appreciated

[ILC-YTP]

Windows 10 Pro
Discord Desktop App (main build) with Vencord and OpenAsar installed
Oldcord theme installed, with minimum Quick CSS changes to remove buttons I don't like

Comparing screenshot OP posted to what I see on my end:
Searchbar results menu is transparent: Could not replicate, solid gray on my end. The search bar displays the name of the GC or server in the search bar itself, while OP shows the GC/server name appearing below the search bar and ontop of the menu. This might be conflicting with the CSS

First search filter instance has it's box outline slightly cut off: This is true on my end, thought pretty minor all things considering

Certain UI elements being colored black when they should be a shading of gray: Could not replicate this. I wonder if OP has the wrong vanilla discord dark theme set?

Inbox Icon is cut off: I have this issue as well. I tried to fix it myself, but it's nested into something else I just can't find the root cause of. I didn't try forcing !important flags tho

[KingGamingYT]

fixed the inbox issue on my end, personally it didn't appear cut off, only oversized